> 16);
break;
case OS.Pg_IMAGE_DIRECT_8888:
transparent = ((transparent & 0xFF00) << 8) | ((transparent & 0xFF0000) >> 8) | ((transparent & 0xFF000000) >> 24);
break;
case OS.Pg_IMAGE_DIRECT_565:
transparent = ((transparent & 0xF800) << 8) | ((transparent & 0x7E0) << 5) | ((transparent & 0x1F) << 3);
break;
case OS.Pg_IMAGE_DIRECT_555:
transparent = ((transparent & 0x7C00) << 9) | ((transparent & 0x3E0) << 6) | ((transparent & 0x1F) << 3);
break;
case OS.Pg_IMAGE_DIRECT_444:
transparent = ((transparent & 0xF00) << 12) | ((transparent & 0xF0) << 8) | ((transparent & 0xF) << 4);
break;
}
}
OS.PhMakeTransBitmap(image, transparent);
}
static int scaleImage(Image image, PhImage_t phImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) {
PhPoint_t trans = new PhPoint_t();
PhDim_t scale = new PhDim_t();
scale.w = (short)srcWidth;
scale.h = (short)srcHeight;
PhPoint_t pos = new PhPoint_t();
pos.x = (short)-srcX;
pos.y = (short)-srcY;
PhDim_t dim = new PhDim_t();
dim.w = (short)Math.min(phImage.size_w, srcX + srcWidth);
dim.h = (short)Math.min(phImage.size_h, srcY + srcHeight);
/*
* Feature on Photon - It is only possible to draw on images of
* type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888.
*/
int type = OS.Pg_IMAGE_PALETTE_BYTE;
if ((phImage.type & OS.Pg_IMAGE_CLASS_MASK) == OS.Pg_IMAGE_CLASS_DIRECT) {
type = OS.Pg_IMAGE_DIRECT_888;
}
/* Scale the image */
int memImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, type, phImage.palette, phImage.colors, 0);
if (memImage == 0) return 0;
int mc = OS.PmMemCreateMC(memImage, scale, trans);
if (mc == 0) {
Image.destroyImage(memImage);
return 0;
}
int prevContext = OS.PmMemStart(mc);
OS.PgSetDrawBufferSize(DrawBufferSize);
if (phImage.palette != 0) OS.PgSetPalette(phImage.palette, 0, (short)0, (short)phImage.colors, OS.Pg_PALSET_SOFT, 0);
OS.PgDrawImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0);
if (phImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0);
OS.PmMemFlush(mc, memImage);
OS.PmMemStop(mc);
OS.PmMemReleaseMC(mc);
OS.PhDCSetCurrent(prevContext);
PhImage_t phMemImage = new PhImage_t();
OS.memmove(phMemImage, memImage, PhImage_t.sizeof);
if (image.transparentPixel != -1) {
/* Generate the mask if it was created originally */
if (phImage.mask_bm != 0) {
createMask(memImage, phImage.type, image.transparentPixel);
}
} else if (phImage.mask_bm != 0) {
/* Scale the mask */
int[] palette = new int[2];
palette[0] = 0x000000;
palette[1] = 0xffffff;
int palettePtr = OS.malloc(palette.length * 4);
OS.memmove(palettePtr, palette, palette.length * 4);
/*
* Feature on Photon - It is only possible to draw on images of
* type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888.
*/
int maskImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, OS.Pg_IMAGE_PALETTE_BYTE, palettePtr, palette.length, 0);
if (maskImage == 0) {
Image.destroyImage(memImage);
return 0;
}
mc = OS.PmMemCreateMC(maskImage, scale, trans);
if (mc == 0) {
Image.destroyImage(maskImage);
Image.destroyImage(memImage);
return 0;
}
prevContext = OS.PmMemStart(mc);
OS.PgSetDrawBufferSize(DrawBufferSize);
OS.PgSetFillColor(palette[0]);
OS.PgSetTextColor(palette[1]);
OS.PgDrawBitmap(phImage.mask_bm, OS.Pg_BACK_FILL, pos, dim, phImage.mask_bpl, 0);
OS.PmMemFlush(mc, maskImage);
OS.PmMemStop(mc);
OS.PmMemReleaseMC(mc);
OS.PhDCSetCurrent(prevContext);
OS.free(palettePtr);
/* Transfer the mask to the scaled image */
OS.PhMakeTransBitmap(maskImage, 0 | OS.Pg_INDEX_COLOR);
PhImage_t phMaskImage = new PhImage_t();
OS.memmove(phMaskImage, maskImage, PhImage_t.sizeof);
phMemImage.mask_bm = phMaskImage.mask_bm;
phMemImage.mask_bpl = phMaskImage.mask_bpl;
OS.memmove(memImage, phMemImage, PhImage_t.sizeof);
/* Release the temporary image but not the mask data */
phMaskImage.mask_bm = 0;
phMaskImage.mask_bpl = 0;
phMaskImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL;
OS.memmove(maskImage, phMaskImage, PhImage_t.sizeof);
OS.PhReleaseImage(maskImage);
OS.free(maskImage);
} else if (phImage.alpha != 0) {
PgAlpha_t alpha = new PgAlpha_t();
OS.memmove(alpha, phImage.alpha, PgAlpha_t.sizeof);
int alphaPtr = OS.malloc(PgAlpha_t.sizeof);
if (alphaPtr == 0) {
Image.destroyImage(memImage);
return 0;
}
/* Scale alpha data */
if (alpha.src_alpha_map_map != 0) {
int[] palette = new int[256];
for (int i = 0; i < palette.length; i++) {
palette[i] = i;
}
int palettePtr = OS.malloc(palette.length * 4);
OS.memmove(palettePtr, palette, palette.length * 4);
/*
* Feature on Photon - It is only possible to draw on images of
* type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888.
*/
int alphaImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, OS.Pg_IMAGE_PALETTE_BYTE, palettePtr, palette.length, 0);
if (alphaImage == 0) {
OS.free(palettePtr);
OS.free(alphaPtr);
Image.destroyImage(memImage);
return 0;
}
mc = OS.PmMemCreateMC(alphaImage, scale, trans);
if (mc == 0) {
OS.free(palettePtr);
OS.free(alphaPtr);
Image.destroyImage(alphaImage);
Image.destroyImage(memImage);
return 0;
}
prevContext = OS.PmMemStart(mc);
OS.PgSetPalette(palettePtr, 0, (short)0, (short)palette.length, OS.Pg_PALSET_SOFT, 0);
OS.PgDrawImage(alpha.src_alpha_map_map, OS.Pg_IMAGE_PALETTE_BYTE, pos, dim, alpha.src_alpha_map_bpl, 0);
OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0);
OS.PmMemFlush(mc, alphaImage);
OS.PmMemStop(mc);
OS.PmMemReleaseMC(mc);
OS.PhDCSetCurrent(prevContext);
OS.free(palettePtr);
/* Transfer the image to the scaled image alpha data*/
PhImage_t phAlphaImage = new PhImage_t();
OS.memmove(phAlphaImage, alphaImage, PhImage_t.sizeof);
alpha.src_alpha_map_bpl = (short)phAlphaImage.bpl;
alpha.src_alpha_map_dim_w = (short)phAlphaImage.bpl;
alpha.src_alpha_map_dim_h = (short)phAlphaImage.size_h;
alpha.src_alpha_map_map = phAlphaImage.image;
/* Release the temporary image but not the image data */
phAlphaImage.image = 0;
phAlphaImage.bpl = 0;
phAlphaImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL;
OS.memmove(alphaImage, phAlphaImage, PhImage_t.sizeof);
OS.PhReleaseImage(alphaImage);
OS.free(alphaImage);
}
OS.memmove(alphaPtr, alpha, PgAlpha_t.sizeof);
phMemImage.alpha = alphaPtr;
OS.memmove(memImage, phMemImage, PhImage_t.sizeof);
}
return memImage;
}
/**
* Draws a line, using the foreground color, between the points
* (x1, y1) and (x2, y2).
*
* @param x1 the first point's x coordinate
* @param y1 the first point's y coordinate
* @param x2 the second point's x coordinate
* @param y2 the second point's y coordinate
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawLine (int x1, int y1, int x2, int y2) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawILine(x1, y1, x2, y2);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the outline of an oval, using the foreground color,
* within the specified rectangular area.
*
* The result is a circle or ellipse that fits within the
* rectangle specified by the x, y,
* width, and height arguments.
*
* The oval covers an area that is width + 1
* pixels wide and height + 1 pixels tall.
*
*
* @param x the x coordinate of the upper left corner of the oval to be drawn
* @param y the y coordinate of the upper left corner of the oval to be drawn
* @param width the width of the oval to be drawn
* @param height the height of the oval to be drawn
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawOval (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
PhPoint_t center = new PhPoint_t();
center.x = (short)x; center.y = (short)y;
PhPoint_t radii = new PhPoint_t();
// Don't subtract one, so that the bottom/right edges are drawn
radii.x = (short)(x + width); radii.y = (short)(y + height);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawEllipse(center, radii, OS.Pg_DRAW_STROKE | OS.Pg_EXTENT_BASED);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the path described by the parameter.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the path to draw
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
*
* @since 3.1
*/
public void drawPath(Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* Draws a pixel, using the foreground color, at the specified
* point (x, y).
*
* Note that the receiver's line attributes do not affect this
* operation.
*
*
* @param x the point's x coordinate
* @param y the point's y coordinate
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.0
*/
public void drawPoint (int x, int y) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawIPixel(x, y);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the closed polygon which is defined by the specified array
* of integer coordinates, using the receiver's foreground color. The array
* contains alternating x and y values which are considered to represent
* points which are the vertices of the polygon. Lines are drawn between
* each consecutive pair, and between the first pair and last pair in the
* array.
*
* @param pointArray an array of alternating x and y values which are the vertices of the polygon
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT if pointArray is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawPolygon(int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
short[] points = new short[pointArray.length];
for (int i = pointArray.length - 1; i >= 0; i--) {
points[i] = (short)pointArray[i];
}
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_STROKE | OS.Pg_CLOSED);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the polyline which is defined by the specified array
* of integer coordinates, using the receiver's foreground color. The array
* contains alternating x and y values which are considered to represent
* points which are the corners of the polyline. Lines are drawn between
* each consecutive pair, but not between the first pair and last pair in
* the array.
*
* @param pointArray an array of alternating x and y values which are the corners of the polyline
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the point array is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawPolyline(int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
short[] points = new short[pointArray.length];
for (int i = pointArray.length - 1; i >= 0; i--) {
points[i] = (short)pointArray[i];
}
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_STROKE);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the outline of the rectangle specified by the arguments,
* using the receiver's foreground color. The left and right edges
* of the rectangle are at x and x + width.
* The top and bottom edges are at y and y + height.
*
* @param x the x coordinate of the rectangle to be drawn
* @param y the y coordinate of the rectangle to be drawn
* @param width the width of the rectangle to be drawn
* @param height the height of the rectangle to be drawn
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRectangle (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
// Don't subtract one, so that the bottom/right edges are drawn
OS.PgDrawIRect(x, y, x + width, y + height, OS.Pg_DRAW_STROKE);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the outline of the specified rectangle, using the receiver's
* foreground color. The left and right edges of the rectangle are at
* rect.x and rect.x + rect.width. The top
* and bottom edges are at rect.y and
* rect.y + rect.height.
*
* @param rect the rectangle to draw
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the rectangle is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRectangle (Rectangle rect) {
if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
drawRectangle (rect.x, rect.y, rect.width, rect.height);
}
/**
* Draws the outline of the round-cornered rectangle specified by
* the arguments, using the receiver's foreground color. The left and
* right edges of the rectangle are at x and x + width.
* The top and bottom edges are at y and y + height.
* The roundness of the corners is specified by the
* arcWidth and arcHeight arguments, which
* are respectively the width and height of the ellipse used to draw
* the corners.
*
* @param x the x coordinate of the rectangle to be drawn
* @param y the y coordinate of the rectangle to be drawn
* @param width the width of the rectangle to be drawn
* @param height the height of the rectangle to be drawn
* @param arcWidth the width of the arc
* @param arcHeight the height of the arc
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
PhRect_t rect = new PhRect_t();
rect.ul_x = (short)x; rect.ul_y = (short)y;
// Don't subtract one, so that the bottom/right edges are drawn
rect.lr_x = (short)(x + width); rect.lr_y = (short)(y + height);
PhPoint_t radii = new PhPoint_t();
radii.x = (short)(arcWidth / 2); radii.y = (short)(arcHeight / 2);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawRoundRect(rect, radii, OS.Pg_DRAW_STROKE);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. No tab expansion or carriage return processing
* will be performed. The background of the rectangular area where
* the string is being drawn will be filled with the receiver's
* background color.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawString (String string, int x, int y) {
drawString(string, x, y, false);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. No tab expansion or carriage return processing
* will be performed. If isTransparent is true,
* then the background of the rectangular area where the string is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
* @param isTransparent if true the background will be transparent, otherwise it will be opaque
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawString (String string, int x, int y, boolean isTransparent) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
int drawFlags = OS.Pg_TEXT_LEFT | OS.Pg_TEXT_TOP;
if (!isTransparent) drawFlags |= OS.Pg_BACK_FILL;
byte[] buffer = Converter.wcsToMbcs(null, string, false);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
PhPoint_t pos = new PhPoint_t();
pos.x = (short)x;
pos.y = (short)y;
if (!data.xorMode) {
OS.PgDrawText(buffer, buffer.length, pos, drawFlags);
} else {
if (isTransparent) {
Font font = data.font;
PhRect_t rect = new PhRect_t();
OS.PfExtentText(rect, null, font.handle, buffer, buffer.length);
short width = (short)(rect.lr_x - rect.ul_x + 1);
short height = (short)(rect.lr_y - rect.ul_y + 1);
int image = OS.PhCreateImage(null, width, height, OS.Pg_IMAGE_DIRECT_888, 0, 0, 0);
PhDim_t dim = new PhDim_t();
dim.w = width;
dim.h = height;
PhPoint_t point = new PhPoint_t();
int pmMC = OS.PmMemCreateMC(image, dim, point);
if (pmMC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
int prevCont = OS.PmMemStart(pmMC);
OS.PgSetTextColor(data.foreground);
OS.PgSetFont(font.handle);
pos.x = pos.y = (short)0;
OS.PgDrawText(buffer, buffer.length, pos, drawFlags);
OS.PmMemFlush(pmMC, image);
OS.PmMemStop(pmMC);
OS.PhDCSetCurrent(prevCont);
OS.PmMemReleaseMC(pmMC);
point.x = (short)x;
point.y = (short)y;
PhImage_t phImage = new PhImage_t();
OS.memmove(phImage, image, PhImage_t.sizeof);
OS.PgSetDrawMode(OS.Pg_DrawModeDSx);
dirtyBits |= DIRTY_XORMODE;
OS.PgDrawImage(phImage.image, phImage.type, point, dim, phImage.bpl, 0);
phImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL;
OS.memmove(image, phImage, PhImage_t.sizeof);
OS.PhReleaseImage(image);
OS.free(image);
} else {
OS.PgSetTextXORColor(data.foreground, data.background);
OS.PgSetDrawMode(OS.Pg_DrawModeS);
OS.PgDrawText(buffer, buffer.length, pos, drawFlags);
dirtyBits |= DIRTY_XORMODE | DIRTY_FOREGROUND;
}
}
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion and carriage return processing
* are performed. The background of the rectangular area where
* the text is being drawn will be filled with the receiver's
* background color.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y) {
drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion and carriage return processing
* are performed. If isTransparent is true,
* then the background of the rectangular area where the text is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param isTransparent if true the background will be transparent, otherwise it will be opaque
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y, boolean isTransparent) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB;
if (isTransparent) flags |= SWT.DRAW_TRANSPARENT;
drawText(string, x, y, flags);
}
/**
* Draws the given string, using the receiver's current font and
* foreground color. Tab expansion, line delimiter and mnemonic
* processing are performed according to the specified flags. If
* flags includes DRAW_TRANSPARENT,
* then the background of the rectangular area where the text is being
* drawn will not be modified, otherwise it will be filled with the
* receiver's background color.
*
* The parameter flags may be a combination of:
*
* - DRAW_DELIMITER
* - draw multiple lines
* - DRAW_TAB
* - expand tabs
* - DRAW_MNEMONIC
* - underline the mnemonic character
* - DRAW_TRANSPARENT
* - transparent background
*
*
*
* @param string the string to be drawn
* @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
* @param flags the flags specifying how to process the text
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void drawText (String string, int x, int y, int flags) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if ((flags & ~SWT.DRAW_TRANSPARENT) == 0) {
drawString(string, x, y, (flags & SWT.DRAW_TRANSPARENT) != 0);
} else {
drawText(string, x, y, flags, true);
}
}
Point drawText(String text, int x, int y, int flags, boolean draw) {
/* NOT DONE - inline code for performance */
int length = text.length();
char[] buffer = new char[length];
text.getChars(0, length, buffer, 0);
/* NOT DONE - tabstops */
int spaceWidth = stringExtent(" ").x;
int tabWidth = spaceWidth *8 + 1;
boolean transparent = (flags & SWT.DRAW_TRANSPARENT) != 0;
int mnemonic = -1;
int start = 0, i = 0, j = 0;
int initialX = x, initialY = y;
int maxX = x, maxY = y;
while (i < length) {
char c = buffer[j] = buffer[i];
switch (c) {
case '\t': {
if ((flags & SWT.DRAW_TAB) == 0) break;
String string = new String(buffer, start, j - start);
if (draw) drawString(string, x, y, transparent);
Point extent = stringExtent(string);
x += extent.x + tabWidth;
maxX = Math.max(x, maxX);
maxY = Math.max(y + extent.y, maxY);
start = j + 1;
break;
}
case '\n': {
if ((flags & SWT.DRAW_DELIMITER) == 0) break;
String string = new String(buffer, start, j - start);
if (draw) drawString(string, x, y, transparent);
Point extent = stringExtent(string);
maxX = Math.max(x + extent.x, maxX);
x = initialX;
y += extent.y;
maxY = Math.max(y, maxY);
start = j + 1;
break;
}
case '&': {
if ((flags & SWT.DRAW_MNEMONIC) == 0) break;
if (i + 1 == length) break;
if (buffer[i + 1] == '&') {i++; break;}
if (mnemonic == -1) {
mnemonic = i + 1;
String string = new String(buffer, start, j - start);
if (draw) drawString(string, x, y, transparent);
Point extent = stringExtent(string);
x += extent.x;
start = mnemonic;
string = new String(buffer, start, 1);
if (draw) drawString(string, x, y, transparent);
extent = stringExtent(string);
int underlineY = y + extent.y - 1;
if (draw) drawLine(x, underlineY, x + extent.x, underlineY);
x += extent.x;
maxX = Math.max(x, maxX);
maxY = Math.max(y + extent.y, maxY);
start = j + 1;
}
j--;
break;
}
}
j++;
i++;
}
if (start != j) {
String string = new String(buffer, start, j - start);
if (draw) drawString(string, x, y, transparent);
Point extent = stringExtent(string);
maxX = Math.max(x + extent.x, maxX);
maxY = Math.max(y + extent.y, maxY);
}
return new Point(maxX - initialX, maxY - initialY);
}
/**
* Compares the argument to the receiver, and returns true
* if they represent the same object using a class
* specific comparison.
*
* @param object the object to compare with this object
* @return true if the object is the same as this object and false otherwise
*
* @see #hashCode
*/
public boolean equals (Object object) {
return (object == this) || ((object instanceof GC) && (handle == ((GC)object).handle));
}
/**
* Fills the interior of a circular or elliptical arc within
* the specified rectangular area, with the receiver's background
* color.
*
* The resulting arc begins at startAngle and extends
* for arcAngle degrees, using the current color.
* Angles are interpreted such that 0 degrees is at the 3 o'clock
* position. A positive value indicates a counter-clockwise rotation
* while a negative value indicates a clockwise rotation.
*
* The center of the arc is the center of the rectangle whose origin
* is (x, y) and whose size is specified by the
* width and height arguments.
*
* The resulting arc covers an area width + 1 pixels wide
* by height + 1 pixels tall.
*
*
* @param x the x coordinate of the upper-left corner of the arc to be filled
* @param y the y coordinate of the upper-left corner of the arc to be filled
* @param width the width of the arc to be filled
* @param height the height of the arc to be filled
* @param startAngle the beginning angle
* @param arcAngle the angular extent of the arc, relative to the start angle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawArc
*/
public void fillArc (int x, int y, int width, int height, int startAngle, int arcAngle) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
if (width == 0 || height == 0 || arcAngle == 0) return;
if (startAngle > 0) {
if (arcAngle > 0) {
//No need to modify start angle.
arcAngle += startAngle;
} else {
int newStartAngle;
int newStopAngle = startAngle;
if (startAngle > Math.abs(arcAngle)) {
newStartAngle = startAngle - Math.abs(arcAngle);
} else {
newStartAngle = startAngle + 360 - Math.abs(arcAngle);
}
startAngle = newStartAngle;
arcAngle = newStopAngle;
}
} else {
if (arcAngle > 0) {
arcAngle = arcAngle + startAngle;
startAngle = 360 - Math.abs(startAngle);
} else {
int newStopAngle = 360 + startAngle;
startAngle = newStopAngle - Math.abs(arcAngle);
arcAngle = newStopAngle;
}
}
startAngle = (int) (startAngle * 65536 / 360);
arcAngle = (int) (arcAngle * 65536 / 360);
PhPoint_t center = new PhPoint_t();
center.x = (short)(x + (width / 2));
center.y = (short)(y + (height / 2));
PhPoint_t radii = new PhPoint_t();
radii.x = (short)(width / 2);
radii.y = (short)(height / 2);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawArc(center, radii, startAngle, arcAngle, OS.Pg_ARC_PIE | OS.Pg_DRAW_FILL);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Fills the interior of the specified rectangle with a gradient
* sweeping from left to right or top to bottom progressing
* from the receiver's foreground color to its background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled, may be negative
* (inverts direction of gradient if horizontal)
* @param height the height of the rectangle to be filled, may be negative
* (inverts direction of gradient if vertical)
* @param vertical if true sweeps from top to bottom, else
* sweeps from left to right
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillGradientRectangle(int x, int y, int width, int height, boolean vertical) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if ((width == 0) || (height == 0)) return;
int fromColor = data.foreground;
int toColor = data.background;
boolean swapColors = false;
if (width < 0) {
x += width; width = -width;
if (! vertical) swapColors = true;
}
if (height < 0) {
y += height; height = -height;
if (vertical) swapColors = true;
}
if (swapColors) {
final int t = toColor;
toColor = fromColor;
fromColor = t;
}
if (fromColor == toColor) {
fillRectangle(x, y, width, height);
return;
}
PhPoint_t upperLeft = new PhPoint_t();
upperLeft.x = (short)x;
upperLeft.y = (short)y;
PhPoint_t lowerRight = new PhPoint_t();
lowerRight.x = (short)(x + width - 1);
lowerRight.y = (short)(y + height - 1);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawGradient(upperLeft, lowerRight,
vertical ? OS.Pg_GRAD_VERTICAL : OS.Pg_GRAD_HORIZONTAL, OS.Pg_GRAD_LINEAR,
vertical ? height : width, fromColor, toColor, 0, 0, 0, null);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Fills the interior of an oval, within the specified
* rectangular area, with the receiver's background
* color.
*
* @param x the x coordinate of the upper left corner of the oval to be filled
* @param y the y coordinate of the upper left corner of the oval to be filled
* @param width the width of the oval to be filled
* @param height the height of the oval to be filled
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawOval
*/
public void fillOval (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
PhPoint_t center = new PhPoint_t();
center.x = (short)x; center.y = (short)y;
PhPoint_t radii = new PhPoint_t();
radii.x = (short)(x + width);
radii.y = (short)(y + height);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawEllipse(center, radii, OS.Pg_DRAW_FILL | OS.Pg_EXTENT_BASED);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Fills the path described by the parameter.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the path to fill
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
*
* @since 3.1
*/
public void fillPath (Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* Fills the interior of the closed polygon which is defined by the
* specified array of integer coordinates, using the receiver's
* background color. The array contains alternating x and y values
* which are considered to represent points which are the vertices of
* the polygon. Lines are drawn between each consecutive pair, and
* between the first pair and last pair in the array.
*
* @param pointArray an array of alternating x and y values which are the vertices of the polygon
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT if pointArray is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawPolygon
*/
public void fillPolygon(int[] pointArray) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
short[] points = new short[pointArray.length];
for (int i = pointArray.length - 1; i >= 0; i--) {
points[i] = (short)pointArray[i];
}
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_FILL | OS.Pg_CLOSED);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Fills the interior of the rectangle specified by the arguments,
* using the receiver's background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled
* @param height the height of the rectangle to be filled
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillRectangle (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (width == 0 || height == 0) return;
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawIRect(x, y, x + width - 1, y + height - 1, OS.Pg_DRAW_FILL);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Fills the interior of the specified rectangle, using the receiver's
* background color.
*
* @param rect the rectangle to be filled
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the rectangle is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRectangle(int, int, int, int)
*/
public void fillRectangle (Rectangle rect) {
if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
fillRectangle (rect.x, rect.y, rect.width, rect.height);
}
/**
* Fills the interior of the round-cornered rectangle specified by
* the arguments, using the receiver's background color.
*
* @param x the x coordinate of the rectangle to be filled
* @param y the y coordinate of the rectangle to be filled
* @param width the width of the rectangle to be filled
* @param height the height of the rectangle to be filled
* @param arcWidth the width of the arc
* @param arcHeight the height of the arc
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #drawRoundRectangle
*/
public void fillRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
PhRect_t rect = new PhRect_t();
rect.ul_x = (short)x; rect.ul_y = (short)y;
rect.lr_x = (short)(x + width - 1); rect.lr_y = (short)(y + height - 1);
PhPoint_t radii = new PhPoint_t();
radii.x = (short)(arcWidth / 2); radii.y = (short)(arcHeight / 2);
int flags = OS.PtEnter(0);
try {
int prevContext = setGC();
setGCTranslation();
setGCClipping();
OS.PgDrawRoundRect(rect, radii, OS.Pg_DRAW_FILL);
unsetGC(prevContext);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Force outstanding drawing commands to be processed.
*/
void flushImage () {
Image image = data.image;
if (image == null) return;
int prevContext = OS.PmMemStart(handle);
OS.PmMemFlush(handle, image.handle);
OS.PmMemStop(handle);
OS.PhDCSetCurrent(prevContext);
}
/**
* Returns the advance width of the specified character in
* the font which is currently selected into the receiver.
*
* The advance width is defined as the horizontal distance the cursor
* should move after printing the character in the selected font.
*
*
* @param ch the character to measure
* @return the distance in the x direction to move past the character before painting the next
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getAdvanceWidth(char ch) {
return getCharWidth(ch);
}
/**
* Returns true if receiver is using the operating system's
* advanced graphics subsystem. Otherwise, false is returned
* to indicate that normal graphics are in use.
*
* Advanced graphics may not be installed for the operating system. In this
* case, false is always returned. Some operating system have
* only one graphics subsystem. If this subsystem supports advanced graphics,
* then true is always returned. If any graphics operation such
* as alpha, antialias, patterns, interpolation, paths, clipping or transformation
* has caused the receiver to switch from regular to advanced graphics mode,
* true is returned. If the receiver has been explicitly switched
* to advanced mode and this mode is supported, true is returned.
*
*
* @return the advanced value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #setAdvanced
*
* @since 3.1
*/
public boolean getAdvanced() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return false;
}
/**
* Returns the receiver's alpha value. The alpha value
* is between 0 (transparent) and 255 (opaque).
*
* @return the alpha value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getAlpha() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return 0xFF;
}
/**
* Returns the receiver's anti-aliasing setting value, which will be
* one of SWT.DEFAULT, SWT.OFF or
* SWT.ON. Note that this controls anti-aliasing for all
* non-text drawing operations.
*
* @return the anti-aliasing setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #getTextAntialias
*
* @since 3.1
*/
public int getAntialias() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return SWT.DEFAULT;
}
/**
* Returns the background color.
*
* @return the receiver's background color
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Color getBackground() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return Color.photon_new(data.device, data.background);
}
/**
* Returns the background pattern. The default value is
* null.
*
* @return the receiver's background pattern
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Pattern
*
* @since 3.1
*/
public Pattern getBackgroundPattern() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return null;
}
/**
* Returns the width of the specified character in the font
* selected into the receiver.
*
* The width is defined as the space taken up by the actual
* character, not including the leading and tailing whitespace
* or overhang.
*
*
* @param ch the character to measure
* @return the width of the character
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getCharWidth(char ch) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
String string = new String(new char[] {ch});
Point point = stringExtent(string);
return point.x;
}
/**
* Returns the bounding rectangle of the receiver's clipping
* region. If no clipping region is set, the return value
* will be a rectangle which covers the entire bounds of the
* object the receiver is drawing on.
*
* @return the bounding rectangle of the clipping region
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Rectangle getClipping() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
int flags = OS.PtEnter(0);
try {
PhRect_t rect = new PhRect_t();
int rid = data.rid;
int widget = data.widget;
Image image = data.image;
if (rid == OS.Ph_DEV_RID) {
OS.PhRegionQuery (rid, null, rect, 0, 0);
} else if (widget != 0) {
OS.PtWidgetCanvas(widget, rect);
} else if (image != null) {
PhImage_t img = new PhImage_t();
OS.memmove(img, image.handle, PhImage_t.sizeof);
rect.lr_x = (short)(img.size_w - 1);
rect.lr_y = (short)(img.size_h - 1);
}
int clipRects = data.clipRects;
if (clipRects != 0) {
int clipRectsCount = data.clipRectsCount;
int clip_ptr = OS.malloc(PhRect_t.sizeof);
OS.memmove(clip_ptr, clipRects, PhRect_t.sizeof);
for (int i = 1; i < clipRectsCount; i++) {
OS.PhRectUnion (clip_ptr, clipRects + (i * PhRect_t.sizeof));
}
int rect_ptr = OS.malloc(PhRect_t.sizeof);
OS.memmove(rect_ptr, rect, PhRect_t.sizeof);
boolean intersect = OS.PhRectIntersect(rect_ptr, clip_ptr) != 0;
OS.memmove(rect, rect_ptr, PhRect_t.sizeof);
OS.free(rect_ptr);
OS.free(clip_ptr);
if (!intersect) return new Rectangle(0, 0, 0, 0);
}
int width = rect.lr_x - rect.ul_x + 1;
int height = rect.lr_y - rect.ul_y + 1;
return new Rectangle(rect.ul_x, rect.ul_y, width, height);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Sets the region managed by the argument to the current
* clipping region of the receiver.
*
* @param region the region to fill with the clipping region
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the region is null
* - ERROR_INVALID_ARGUMENT - if the region is disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void getClipping (Region region) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (region == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int flags = OS.PtEnter(0);
try {
if (region.handle != 0 && region.handle != Region.EMPTY_REGION) {
OS.PhFreeTiles(region.handle);
}
int clipRects = data.clipRects;
if (clipRects != 0) {
region.handle = OS.PhRectsToTiles(clipRects, data.clipRectsCount);
} else {
region.handle = OS.PhGetTile();
PhRect_t rect = new PhRect_t ();
int rid = data.rid;
int widget = data.widget;
Image image = data.image;
if (rid == OS.Ph_DEV_RID) {
OS.PhRegionQuery (rid, null, rect, 0, 0);
} else if (widget != 0) {
OS.PtWidgetCanvas(widget, rect);
} else if (image != null) {
PhImage_t img = new PhImage_t();
OS.memmove(img, image.handle, PhImage_t.sizeof);
rect.lr_x = (short)(img.size_w - 1);
rect.lr_y = (short)(img.size_h - 1);
}
OS.memmove(region.handle, rect, PhRect_t.sizeof);
}
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
}
/**
* Returns the receiver's fill rule, which will be one of
* SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
*
* @return the receiver's fill rule
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getFillRule() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
//TODO - implement fill rule
return SWT.FILL_EVEN_ODD;
}
/**
* Returns the font currently being used by the receiver
* to draw and measure text.
*
* @return the receiver's font
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Font getFont () {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.font;
}
/**
* Returns a FontMetrics which contains information
* about the font currently being used by the receiver
* to draw and measure text.
*
* @return font metrics for the receiver's font
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public FontMetrics getFontMetrics() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
FontQueryInfo info = new FontQueryInfo();
OS.PfQueryFontInfo(data.font.handle, info);
return FontMetrics.photon_new(info);
}
/**
* Returns the receiver's foreground color.
*
* @return the color used for drawing foreground things
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Color getForeground() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return Color.photon_new(data.device, data.foreground);
}
/**
* Returns the foreground pattern. The default value is
* null.
*
* @return the receiver's foreground pattern
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Pattern
*
* @since 3.1
*/
public Pattern getForegroundPattern() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return null;
}
/**
* Returns the GCData.
*
* IMPORTANT: This method is not part of the public
* API for GC. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
*
*
* @return the receiver's GCData
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see GCData
*
* @since 3.2
*/
public GCData getGCData() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data;
}
/**
* Returns the receiver's interpolation setting, which will be one of
* SWT.DEFAULT, SWT.NONE,
* SWT.LOW or SWT.HIGH.
*
* @return the receiver's interpolation setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getInterpolation() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return SWT.DEFAULT;
}
/**
* Returns the receiver's line attributes.
*
* @return the line attributes used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.3
*/
public LineAttributes getLineAttributes() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
float[] dashes = null;
if (data.dashes != null) {
dashes = new float[data.dashes.length];
for (int i = 0; i < dashes.length; i++) {
dashes[i] = data.dashes[i];
}
}
return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, 0, 10);
}
/**
* Returns the receiver's line cap style, which will be one
* of the constants SWT.CAP_FLAT, SWT.CAP_ROUND,
* or SWT.CAP_SQUARE.
*
* @return the cap style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getLineCap() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineCap;
}
/**
* Returns the receiver's line dash style. The default value is
* null.
*
* @return the line dash style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int[] getLineDash() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
byte[] dashList = data.dashes;
if (dashList == null) return null;
int[] dashes = new int[dashList.length];
for (int i = 0; i < dashes.length; i++) {
dashes[i] = dashList[i] & 0xFF;
}
return dashes;
}
/**
* Returns the receiver's line join style, which will be one
* of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND,
* or SWT.JOIN_BEVEL.
*
* @return the join style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public int getLineJoin() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineJoin;
}
/**
* Returns the receiver's line style, which will be one
* of the constants SWT.LINE_SOLID, SWT.LINE_DASH,
* SWT.LINE_DOT, SWT.LINE_DASHDOT or
* SWT.LINE_DASHDOTDOT.
*
* @return the style used for drawing lines
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getLineStyle() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineStyle;
}
/**
* Returns the width that will be used when drawing lines
* for all of the figure drawing operations (that is,
* drawLine, drawRectangle,
* drawPolyline, and so forth.
*
* @return the receiver's line width
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public int getLineWidth() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.lineWidth;
}
/**
* Returns the receiver's style information.
*
* Note that the value which is returned by this method may
* not match the value which was provided to the constructor
* when the receiver was created. This can occur when the underlying
* operating system does not support a particular combination of
* requested styles.
*
*
* @return the style bits
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 2.1.2
*/
public int getStyle () {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.style;
}
/**
* Returns the receiver's text drawing anti-aliasing setting value,
* which will be one of SWT.DEFAULT, SWT.OFF or
* SWT.ON. Note that this controls anti-aliasing
* only for text drawing operations.
*
* @return the anti-aliasing setting
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #getAntialias
*
* @since 3.1
*/
public int getTextAntialias() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return SWT.DEFAULT;
}
/**
* Sets the parameter to the transform that is currently being
* used by the receiver.
*
* @param transform the destination to copy the transform into
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parameter is null
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see Transform
*
* @since 3.1
*/
public void getTransform(Transform transform) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* Returns true if this GC is drawing in the mode
* where the resulting color in the destination is the
* exclusive or of the color values in the source
* and the destination, and false if it is
* drawing in the mode where the destination color is being
* replaced with the source color value.
*
* @return true true if the receiver is in XOR mode, and false otherwise
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public boolean getXORMode() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.xorMode;
}
/**
* Returns an integer hash code for the receiver. Any two
* objects that return true when passed to
* equals must return the same value for this
* method.
*
* @return the receiver's hash
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #equals
*/
public int hashCode () {
return handle;
}
void init(Drawable drawable, GCData data, int context) {
if (data.foreground == -1) data.foreground = DefaultFore;
if (data.background == -1) data.background = DefaultBack;
if (data.font == null) data.font = data.device.systemFont;
dirtyBits = DIRTY_FOREGROUND | DIRTY_BACKGROUND | DIRTY_FONT;
Image image = data.image;
if (image != null) {
image.memGC = this;
int prevContext = OS.PmMemStart(context);
OS.PgSetDrawBufferSize(DrawBufferSize);
OS.PmMemStop(context);
OS.PhDCSetCurrent(prevContext);
/*
* Destroy the mask when it is generated from a transparent
* pixel since drawing on the image might change the mask.
*/
if (image.transparentPixel != -1) {
PhImage_t phImage = new PhImage_t ();
OS.memmove(phImage, image.handle, PhImage_t.sizeof);
if (phImage.mask_bm != 0) {
OS.free(phImage.mask_bm);
phImage.mask_bm = 0;
phImage.mask_bpl = 0;
OS.memmove(image.handle, phImage, PhImage_t.sizeof);
}
}
}
this.drawable = drawable;
this.data = data;
handle = context;
}
/**
* Returns true if the receiver has a clipping
* region set into it, and false otherwise.
* If this method returns false, the receiver will draw on all
* available space in the destination. If it returns true,
* it will draw only in the area that is covered by the region
* that can be accessed with getClipping(region).
*
* @return true if the GC has a clipping region, and false otherwise
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public boolean isClipped() {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
return data.clipRects != 0;
}
/**
* Returns true if the GC has been disposed,
* and false otherwise.
*
* This method gets the dispose state for the GC.
* When a GC has been disposed, it is an error to
* invoke any other method using the GC.
*
* @return true when the GC is disposed and false otherwise
*/
public boolean isDisposed() {
return handle == 0;
}
/**
* Sets the receiver to always use the operating system's advanced graphics
* subsystem for all graphics operations if the argument is true.
* If the argument is false, the advanced graphics subsystem is
* no longer used, advanced graphics state is cleared and the normal graphics
* subsystem is used from now on.
*
* Normally, the advanced graphics subsystem is invoked automatically when
* any one of the alpha, antialias, patterns, interpolation, paths, clipping
* or transformation operations in the receiver is requested. When the receiver
* is switched into advanced mode, the advanced graphics subsystem performs both
* advanced and normal graphics operations. Because the two subsystems are
* different, their output may differ. Switching to advanced graphics before
* any graphics operations are performed ensures that the output is consistent.
*
* Advanced graphics may not be installed for the operating system. In this
* case, this operation does nothing. Some operating system have only one
* graphics subsystem, so switching from normal to advanced graphics does
* nothing. However, switching from advanced to normal graphics will always
* clear the advanced graphics state, even for operating systems that have
* only one graphics subsystem.
*
*
* @param advanced the new advanced graphics state
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @see #setAlpha
* @see #setAntialias
* @see #setBackgroundPattern
* @see #setClipping(Path)
* @see #setForegroundPattern
* @see #setLineAttributes
* @see #setInterpolation
* @see #setTextAntialias
* @see #setTransform
* @see #getAdvanced
*
* @since 3.1
*/
public void setAdvanced(boolean advanced) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (!advanced) {
setAlpha(0xFF);
setAntialias(SWT.DEFAULT);
setBackgroundPattern(null);
setClipping((Rectangle)null);
setForegroundPattern(null);
setInterpolation(SWT.DEFAULT);
setTextAntialias(SWT.DEFAULT);
setTransform(null);
}
}
/**
* Sets the receiver's alpha value which must be
* between 0 (transparent) and 255 (opaque).
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param alpha the alpha value
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setAlpha(int alpha) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
/**
* Sets the receiver's anti-aliasing value to the parameter,
* which must be one of SWT.DEFAULT, SWT.OFF
* or SWT.ON. Note that this controls anti-aliasing for all
* non-text drawing operations.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param antialias the anti-aliasing setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter is not one of
SWT.DEFAULT,
* SWT.OFF or SWT.ON
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
* @see #setTextAntialias
*
* @since 3.1
*/
public void setAntialias(int antialias) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (antialias) {
case SWT.DEFAULT: break;
case SWT.OFF: break;
case SWT.ON:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
/**
* Sets the background color. The background color is used
* for fill operations and as the background color when text
* is drawn.
*
* @param color the new background color for the receiver
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the color is null
* - ERROR_INVALID_ARGUMENT - if the color has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setBackground (Color color) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
data.background = color.handle;
dirtyBits |= DIRTY_BACKGROUND;
}
/**
* Sets the background pattern. The default value is null.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param pattern the new background pattern
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Pattern
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setBackgroundPattern (Pattern pattern) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pattern == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the rectangular area specified
* by the arguments.
*
* @param x the x coordinate of the clipping rectangle
* @param y the y coordinate of the clipping rectangle
* @param width the width of the clipping rectangle
* @param height the height of the clipping rectangle
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (int x, int y, int width, int height) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (width < 0) {
x = x + width;
width = -width;
}
if (height < 0) {
y = y + height;
height = -height;
}
int clipRects = data.clipRects;
if (clipRects != 0)
OS.free(clipRects);
clipRects = OS.malloc(PhRect_t.sizeof);
int clipRectsCount = 1;
PhRect_t rect = new PhRect_t();
rect.ul_x = (short)x;
rect.ul_y = (short)y;
rect.lr_x = (short)(x + width - 1);
rect.lr_y = (short)(y + height - 1);
OS.memmove(clipRects, rect, PhRect_t.sizeof);
data.clipRects = clipRects;
data.clipRectsCount = clipRectsCount;
dirtyBits |= DIRTY_CLIPPING;
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the path specified
* by the argument.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param path the clipping path.
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the path has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Path
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setClipping(Path path) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the rectangular area specified
* by the argument. Specifying null for the
* rectangle reverts the receiver's clipping area to its
* original value.
*
* @param rect the clipping rectangle or null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (Rectangle rect) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (rect == null) {
int clipRects = data.clipRects;
if (clipRects != 0)
OS.free(clipRects);
data.clipRects = data.clipRectsCount = 0;
dirtyBits |= DIRTY_CLIPPING;
} else {
setClipping (rect.x, rect.y, rect.width, rect.height);
}
}
/**
* Sets the area of the receiver which can be changed
* by drawing operations to the region specified
* by the argument. Specifying null for the
* region reverts the receiver's clipping area to its
* original value.
*
* @param region the clipping region or null
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the region has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setClipping (Region region) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int clipRects = data.clipRects;
int clipRectsCount = data.clipRectsCount;
if (clipRects != 0)
OS.free(clipRects);
if (region == null || region.handle == 0) {
clipRects = clipRectsCount = 0;
} else if (region.handle == Region.EMPTY_REGION) {
clipRects = OS.malloc(PhRect_t.sizeof);
OS.memset(clipRects, 0, PhRect_t.sizeof);
clipRectsCount = 1;
} else {
int[] clip_rects_count = new int[1];
clipRects = OS.PhTilesToRects(region.handle, clip_rects_count);
clipRectsCount = clip_rects_count[0];
}
data.clipRects = clipRects;
data.clipRectsCount = clipRectsCount;
dirtyBits |= DIRTY_CLIPPING;
}
/**
* Sets the receiver's fill rule to the parameter, which must be one of
* SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
*
* @param rule the new fill rule
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the rule is not one of
SWT.FILL_EVEN_ODD
* or SWT.FILL_WINDING
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setFillRule(int rule) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (rule) {
case SWT.FILL_WINDING:
case SWT.FILL_EVEN_ODD:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
//TODO - implement fill rule
}
/**
* Sets the font which will be used by the receiver
* to draw and measure text to the argument. If the
* argument is null, then a default font appropriate
* for the platform will be used instead.
*
* @param font the new font for the receiver, or null to indicate a default font
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the font has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setFont (Font font) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
data.font = font == null ? data.device.systemFont : font;
dirtyBits |= DIRTY_FONT;
}
/**
* Sets the foreground color. The foreground color is used
* for drawing operations including when text is drawn.
*
* @param color the new foreground color for the receiver
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the color is null
* - ERROR_INVALID_ARGUMENT - if the color has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setForeground (Color color) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
data.foreground = color.handle;
dirtyBits |= DIRTY_FOREGROUND;
}
/**
* Sets the receiver's interpolation setting to the parameter, which
* must be one of SWT.DEFAULT, SWT.NONE,
* SWT.LOW or SWT.HIGH.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param interpolation the new interpolation setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the rule is not one of
SWT.DEFAULT,
* SWT.NONE, SWT.LOW or SWT.HIGH
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setInterpolation(int interpolation) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (interpolation) {
case SWT.DEFAULT:
case SWT.NONE:
case SWT.LOW:
case SWT.HIGH:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
/**
* Sets the foreground pattern. The default value is null.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param pattern the new foreground pattern
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Pattern
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setForegroundPattern (Pattern pattern) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pattern == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* Sets the receiver's line attributes.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
* @param attributes the line attributes
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the attributes is null
* - ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see LineAttributes
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.3
*/
public void setLineAttributes(LineAttributes attributes) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
//TODO - implement setLineAttributes
}
/**
* Sets the receiver's line cap style to the argument, which must be one
* of the constants SWT.CAP_FLAT, SWT.CAP_ROUND,
* or SWT.CAP_SQUARE.
*
* @param cap the cap style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineCap(int cap) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (cap) {
case SWT.CAP_ROUND:
case SWT.CAP_FLAT:
case SWT.CAP_SQUARE:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
data.lineCap = cap;
dirtyBits |= DIRTY_LINECAP;
}
/**
* Sets the receiver's line dash style to the argument. The default
* value is null. If the argument is not null,
* the receiver's line style is set to SWT.LINE_CUSTOM, otherwise
* it is set to SWT.LINE_SOLID.
*
* @param dashes the dash style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineDash(int[] dashes) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (dashes != null && dashes.length != 0) {
byte[] dashList = new byte[dashes.length];
for (int i = 0; i < dashes.length; i++) {
dashList[i] = (byte)dashes[i];
}
data.dashes = dashList;
data.lineStyle = SWT.LINE_CUSTOM;
} else {
data.dashes = null;
data.lineStyle = SWT.LINE_SOLID;
}
dirtyBits |= DIRTY_LINESTYLE;
}
/**
* Sets the receiver's line join style to the argument, which must be one
* of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND,
* or SWT.JOIN_BEVEL.
*
* @param join the join style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @since 3.1
*/
public void setLineJoin(int join) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (join) {
case SWT.JOIN_MITER:
case SWT.JOIN_ROUND:
case SWT.JOIN_BEVEL:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
data.lineJoin = join;
dirtyBits |= DIRTY_LINEJOIN;
}
/**
* Sets the receiver's line style to the argument, which must be one
* of the constants SWT.LINE_SOLID, SWT.LINE_DASH,
* SWT.LINE_DOT, SWT.LINE_DASHDOT or
* SWT.LINE_DASHDOTDOT.
*
* @param lineStyle the style to be used for drawing lines
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the style is not valid
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setLineStyle(int lineStyle) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (lineStyle) {
case SWT.LINE_SOLID:
case SWT.LINE_DASH:
case SWT.LINE_DOT:
case SWT.LINE_DASHDOT:
case SWT.LINE_DASHDOTDOT:
break;
case SWT.LINE_CUSTOM:
if (data.dashes == null) lineStyle = SWT.LINE_SOLID;
break;
default:
SWT.error (SWT.ERROR_INVALID_ARGUMENT);
return;
}
data.lineStyle = lineStyle;
dirtyBits |= DIRTY_LINESTYLE;
}
/**
* Sets the width that will be used when drawing lines
* for all of the figure drawing operations (that is,
* drawLine, drawRectangle,
* drawPolyline, and so forth.
*
* Note that line width of zero is used as a hint to
* indicate that the fastest possible line drawing
* algorithms should be used. This means that the
* output may be different from line width one.
*
*
* @param lineWidth the width of a line
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public void setLineWidth(int lineWidth) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
data.lineWidth = lineWidth;
dirtyBits |= DIRTY_LINEWIDTH;
}
int setGC() {
int result = 0;
if (data.image != null) result = OS.PmMemStart(handle);
else if (data.rid == OS.Ph_DEV_RID || data.widget != 0) result = OS.PgSetGC(handle);
else return result;
if (dirtyBits != 0) {
if ((dirtyBits & DIRTY_BACKGROUND) != 0) {
OS.PgSetFillColor(data.background);
}
if ((dirtyBits & DIRTY_FOREGROUND) != 0) {
int foreColor = data.foreground;
OS.PgSetStrokeColor(foreColor);
OS.PgSetTextColor(foreColor);
}
if ((dirtyBits & DIRTY_FONT) != 0) {
Font font = data.font;
OS.PfLoadMetrics(font.handle);
OS.PgSetFont(font.handle);
}
if ((dirtyBits & DIRTY_CLIPPING) != 0) {
OS.PgSetMultiClip(data.clipRectsCount, data.clipRects);
}
if ((dirtyBits & DIRTY_LINECAP) != 0) {
int cap_style = 0;
switch (data.lineCap) {
case SWT.CAP_ROUND:cap_style = OS.Pg_ROUND_CAP; break;
case SWT.CAP_FLAT:cap_style = OS.Pg_BUTT_CAP; break;
case SWT.CAP_SQUARE:cap_style = OS.Pg_SQUARE_CAP; break;
}
OS.PgSetStrokeCap(cap_style);
}
if ((dirtyBits & DIRTY_LINEJOIN) != 0) {
int join_style = 0;
switch (data.lineJoin) {
case SWT.JOIN_ROUND:join_style = OS.Pg_ROUND_JOIN; break;
case SWT.JOIN_MITER:join_style = OS.Pg_MITER_JOIN; break;
case SWT.JOIN_BEVEL:join_style = OS.Pg_BEVEL_JOIN; break;
}
OS.PgSetStrokeJoin(join_style);
}
if ((dirtyBits & DIRTY_LINESTYLE) != 0) {
byte[] dashList = null;
switch (data.lineStyle) {
case SWT.LINE_SOLID: dashList = DashList[0]; break;
case SWT.LINE_DASH: dashList = DashList[1]; break;
case SWT.LINE_DOT: dashList = DashList[2]; break;
case SWT.LINE_DASHDOT: dashList = DashList[3]; break;
case SWT.LINE_DASHDOTDOT: dashList = DashList[4]; break;
case SWT.LINE_CUSTOM: dashList = data.dashes; break;
}
OS.PgSetStrokeDash(dashList, dashList.length, 0x10000);
}
if ((dirtyBits & DIRTY_LINEWIDTH) != 0) {
OS.PgSetStrokeWidth(data.lineWidth);
}
if ((dirtyBits & DIRTY_XORMODE) != 0) {
OS.PgSetDrawMode(data.xorMode ? OS.Pg_DRAWMODE_XOR : OS.Pg_DRAWMODE_OPAQUE);
}
dirtyBits = 0;
}
return result;
}
void setGCClipping() {
int rid = data.rid;
int widget = data.widget;
if(OS.QNX_MAJOR >= 6 && OS.QNX_MINOR >= 3)
{
if(widget > 0)
{
int visibleTiles = OS.PtGetVisibleTiles(widget);
if(data.clipRects != 0)
{
int gcClip = OS.PhRectsToTiles(data.clipRects, data.clipRectsCount);
PhPoint_t pt = new PhPoint_t();
PhRect_t tran_rect = new PhRect_t();
OS.PtWidgetExtent(widget, tran_rect);
OS.PtWidgetOffset(widget, pt);
pt.x += tran_rect.ul_x;
pt.y += tran_rect.ul_y;
OS.PhTranslateTiles(gcClip, pt);
int inter = OS.PhIntersectTilings(visibleTiles, gcClip, new short[1]);
if(inter != 0)
{
OS.PgSetMultiClipTiles(inter);
OS.free(inter);
}
OS.free(gcClip);
} else
{
OS.PgSetMultiClipTiles(visibleTiles);
}
OS.free(visibleTiles);
}
return;
}
if(rid == 1)
OS.PgSetRegion(rid);
else
if(widget != 0)
OS.PgSetRegion(OS.PtWidgetRid(widget));
else
if(data.image != null)
return;
if(widget == 0)
return;
OS.PgSetMultiClip(data.clipRectsCount, data.clipRects);
int clip_tile = getClipping(widget, data.topWidget, true, true, null);
int clip_rects_count[] = new int[1];
int clip_rects = OS.PhTilesToRects(clip_tile, clip_rects_count);
OS.PhFreeTiles(clip_tile);
if(clip_rects_count[0] == 0)
{
clip_rects_count[0] = 1;
OS.free(clip_rects);
clip_rects = OS.malloc(8);
OS.memset(clip_rects, 0, 8);
}
OS.PgSetClipping((short)clip_rects_count[0], clip_rects);
OS.free(clip_rects);
}
void setGCTranslation() {
PhPoint_t pt = new PhPoint_t ();
PhRect_t tran_rect = new PhRect_t();
if (data.widget <= 0 ) return;
OS.PtWidgetExtent(data.widget, tran_rect) ;
OS.PtWidgetOffset(data.widget, pt);
pt.x += tran_rect.ul_x;
pt.y += tran_rect.ul_y;
OS.PgSetTranslation(pt,0);
}
int getClipping(int widget, int topWidget, boolean clipChildren, boolean clipSiblings, int[] child_tiles) {
if(OS.QNX_MAJOR >= 6 && OS.QNX_MINOR >= 3)
if(widget > 0)
{
int visTiles = OS.PtGetVisibleTiles(widget);
PhPoint_t pt = new PhPoint_t();
PhRect_t tranRect = new PhRect_t();
OS.PtWidgetExtent(widget, tranRect);
OS.PtWidgetOffset(widget, pt);
pt.x += tranRect.ul_x;
pt.y += tranRect.ul_y;
int tranPoint = OS.malloc(4);
OS.memmove(tranPoint, pt, 4);
OS.PhDeTranslateTiles(visTiles, tranPoint);
return visTiles;
} else
{
return 0;
}
int child_tile = 0;
int widget_tile = OS.PhGetTile();
PhRect_t rect = new PhRect_t();
int args[] = {
1006, 0, 0, 2015, 0, 0
};
if(clipSiblings && OS.PtWidgetClass(topWidget) != OS.PtWindow())
{
for(int temp_widget = topWidget; (temp_widget = OS.PtWidgetBrotherInFront(temp_widget)) != 0;)
if(OS.PtWidgetIsRealized(temp_widget))
{
int tile = OS.PhGetTile();
if(child_tile == 0)
child_tile = tile;
else
child_tile = OS.PhAddMergeTiles(tile, child_tile, null);
OS.PtWidgetExtent(temp_widget, tile);
args[1] = args[4] = 0;
OS.PtGetResources(temp_widget, args.length / 3, args);
if((args[1] & 0x100) != 0)
{
int basic_flags = args[4];
OS.memmove(rect, tile, 8);
if((basic_flags & 1) != 0)
rect.ul_y++;
if((basic_flags & 2) != 0)
rect.lr_y--;
if((basic_flags & 8) != 0)
rect.ul_x++;
if((basic_flags & 4) != 0)
rect.lr_x--;
OS.memmove(tile, rect, 8);
}
}
OS.PtWidgetCanvas(topWidget, widget_tile);
OS.PhDeTranslateTiles(child_tile, widget_tile);
}
if(clipChildren)
{
for(int temp_widget = OS.PtWidgetChildBack(widget); temp_widget != 0; temp_widget = OS.PtWidgetBrotherInFront(temp_widget))
if(OS.PtWidgetIsRealized(temp_widget))
{
int tile = OS.PhGetTile();
if(child_tile == 0)
child_tile = tile;
else
child_tile = OS.PhAddMergeTiles(tile, child_tile, null);
OS.PtWidgetExtent(temp_widget, tile);
args[1] = args[4] = 0;
OS.PtGetResources(temp_widget, args.length / 3, args);
if((args[1] & 0x100) != 0)
{
int basic_flags = args[4];
OS.memmove(rect, tile, 8);
if((basic_flags & 1) != 0)
rect.ul_y++;
if((basic_flags & 2) != 0)
rect.lr_y--;
if((basic_flags & 8) != 0)
rect.ul_x++;
if((basic_flags & 4) != 0)
rect.lr_x--;
OS.memmove(tile, rect, 8);
}
}
}
OS.PtWidgetCanvas(widget, widget_tile);
OS.PhDeTranslateTiles(widget_tile, widget_tile);
if(child_tile != 0)
{
if(child_tiles != null)
child_tiles[0] = OS.PhIntersectTilings(widget_tile, child_tile, new short[1]);
int clip_tile = OS.PhClipTilings(widget_tile, child_tile, null);
OS.PhFreeTiles(child_tile);
return clip_tile;
} else
{
return widget_tile;
}
}
/**
* Sets the receiver's text anti-aliasing value to the parameter,
* which must be one of SWT.DEFAULT, SWT.OFF
* or SWT.ON. Note that this controls anti-aliasing only
* for all text drawing operations.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param antialias the anti-aliasing setting
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter is not one of
SWT.DEFAULT,
* SWT.OFF or SWT.ON
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see #getAdvanced
* @see #setAdvanced
* @see #setAntialias
*
* @since 3.1
*/
public void setTextAntialias(int antialias) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
switch (antialias) {
case SWT.DEFAULT: break;
case SWT.OFF: break;
case SWT.ON: break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
/**
* Sets the transform that is currently being used by the receiver. If
* the argument is null, the current transform is set to
* the identity transform.
*
* This operation requires the operating system's advanced
* graphics subsystem which may not be available on some
* platforms.
*
*
* @param transform the transform to set
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the parameter has been disposed
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
* - ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
*
*
* @see Transform
* @see #getAdvanced
* @see #setAdvanced
*
* @since 3.1
*/
public void setTransform(Transform transform) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
/**
* If the argument is true, puts the receiver
* in a drawing mode where the resulting color in the destination
* is the exclusive or of the color values in the source
* and the destination, and if the argument is false,
* puts the receiver in a drawing mode where the destination color
* is replaced with the source color value.
*
* Note that this mode in fundamentally unsupportable on certain
* platforms, notably Carbon (Mac OS X). Clients that want their
* code to run on all platforms need to avoid this method.
*
*
* @param xor if true, then xor mode is used, otherwise source copy mode is used
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*
* @deprecated this functionality is not supported on some platforms
*/
public void setXORMode(boolean xor) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
data.xorMode = xor;
dirtyBits |= DIRTY_XORMODE;
}
/**
* Returns the extent of the given string. No tab
* expansion or carriage return processing will be performed.
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point stringExtent(String string) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
PhRect_t rect = new PhRect_t();
int size = string.length();
char[] buffer = new char[size];
string.getChars(0, size, buffer, 0);
int flags = OS.PtEnter(0);
try {
OS.PfExtentWideText(rect, null, data.font.handle, buffer, size * 2);
} finally {
if (flags >= 0) OS.PtLeave(flags);
}
int width;
if (size == 0) width = 0;
else width = rect.lr_x - (rect.ul_x < 0 ? rect.ul_x : 0) + 1;
int height = rect.lr_y - rect.ul_y + 1;
return new Point(width, height);
}
/**
* Returns the extent of the given string. Tab expansion and
* carriage return processing are performed.
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point textExtent(String string) {
return textExtent(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
}
/**
* Returns the extent of the given string. Tab expansion, line
* delimiter and mnemonic processing are performed according to
* the specified flags, which can be a combination of:
*
* - DRAW_DELIMITER
* - draw multiple lines
* - DRAW_TAB
* - expand tabs
* - DRAW_MNEMONIC
* - underline the mnemonic character
* - DRAW_TRANSPARENT
* - transparent background
*
*
* The extent of a string is the width and height of
* the rectangular area it would cover if drawn in a particular
* font (in this case, the current font in the receiver).
*
*
* @param string the string to measure
* @param flags the flags specifying how to process the text
* @return a point containing the extent of the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
*
*/
public Point textExtent(String string, int flags) {
if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if ((flags & ~SWT.DRAW_TRANSPARENT) == 0 || string.length() == 0) {
return stringExtent(string);
} else {
return drawText(string, 0, 0, flags, false);
}
}
/**
* Returns a string containing a concise, human-readable
* description of the receiver.
*
* @return a string representation of the receiver
*/
public String toString () {
if (isDisposed()) return "GC {*DISPOSED*}";
return "GC {" + handle + "}";
}
void unsetGC(int prevContext) {
Image image = data.image;
if (image != null) {
// OS.PmMemFlush(handle, image.handle);
OS.PmMemStop(handle);
OS.PhDCSetCurrent(prevContext);
} else if (data.rid == OS.Ph_DEV_RID || data.widget != 0) {
OS.PgSetGC(prevContext);
// OS.PgFlush();
}
}
public static GC photon_new(Drawable drawable, GCData data) {
GC gc = new GC();
int context = drawable.internal_new_GC(data);
gc.device = data.device;
gc.init(drawable, data, context);
return gc;
}
}