| /* GtkImagePainter.java |
| Copyright (C) 1999, 2000 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.awt.peer.gtk; |
| |
| import java.awt.Color; |
| import java.awt.Rectangle; |
| import java.awt.image.ColorModel; |
| import java.awt.image.ImageConsumer; |
| import java.awt.image.ImageObserver; |
| import java.util.Hashtable; |
| |
| public class GtkImagePainter implements Runnable, ImageConsumer |
| { |
| GtkImage image; |
| GdkGraphics gc; |
| int startX, startY; |
| int redBG; |
| int greenBG; |
| int blueBG; |
| double affine[]; |
| int width, height; |
| boolean flipX, flipY; |
| Rectangle clip; |
| int s_width, s_height; |
| ImageObserver observer; |
| |
| public |
| GtkImagePainter (GtkImage image, GdkGraphics gc, int x, int y, |
| int width, int height, Color bgcolor, ImageObserver o) |
| { |
| this.image = image; |
| this.gc = (GdkGraphics) gc.create (); |
| startX = x; |
| startY = y; |
| redBG = bgcolor.getRed (); |
| greenBG = bgcolor.getGreen (); |
| blueBG = bgcolor.getBlue (); |
| this.width = width; |
| this.height = height; |
| flipX = flipY = false; |
| s_width = s_height = 0; |
| clip = null; |
| observer = o; |
| |
| run (); |
| } |
| |
| public |
| GtkImagePainter (GtkImage image, GdkGraphics gc, |
| int dx1, int dy1, int dx2, int dy2, |
| int sx1, int sy1, int sx2, int sy2, |
| Color bgcolor, ImageObserver o) |
| { |
| this.image = image; |
| this.gc = (GdkGraphics) gc.create (); |
| startX = (dx1 < dx2) ? dx1 : dx2; |
| startY = dy1; |
| redBG = bgcolor.getRed (); |
| greenBG = bgcolor.getGreen (); |
| blueBG = bgcolor.getBlue (); |
| observer = o; |
| |
| this.width = Math.abs (dx2 - dx1); |
| this.height = Math.abs (dy2 - dy1); |
| |
| flipX = ((dx1 > dx2 && sx2 > sx1) |
| || (dx1 < dx2 && sx2 < sx1)); |
| |
| flipY = ((dy1 > dy2 && sy2 > sy1) |
| || (dy1 < dy2 && sy2 < sy1)); |
| |
| s_width = Math.abs (sx2 - sx1); |
| s_height = Math.abs (sy2 - sy1); |
| clip = new Rectangle (sx1, sy1, s_width, s_height); |
| |
| run (); |
| } |
| |
| public void |
| run () |
| { |
| image.startProduction (this); |
| gc.dispose (); |
| } |
| |
| /* Convert pixel data into a format that gdkrgb can understand */ |
| static int[] |
| convertPixels (int[] pixels, ColorModel model) |
| { |
| if (pixels == null || model == null) |
| { |
| return null; |
| } |
| |
| if (model.equals (ColorModel.getRGBdefault ())) |
| return pixels; |
| |
| int ret[] = new int[pixels.length]; |
| |
| for (int i = 0; i < pixels.length; i++) |
| ret[i] = model.getRGB (pixels[i]); |
| |
| return ret; |
| } |
| |
| static int[] |
| convertPixels (byte[] pixels, ColorModel model) |
| { |
| if (pixels == null || model == null) |
| { |
| return null; |
| } |
| |
| int ret[] = new int[pixels.length]; |
| |
| for (int i = 0; i < pixels.length; i++) |
| ret[i] = model.getRGB (pixels[i]); |
| |
| return ret; |
| } |
| |
| native void |
| drawPixels (GdkGraphics gc, int bg_red, int bg_green, int bg_blue, |
| int x, int y, int width, int height, int[] pixels, int offset, |
| int scansize, double affine[]); |
| |
| |
| public void |
| setPixels (int x, int y, int width, int height, ColorModel model, |
| int[] pixels, int offset, int scansize) |
| { |
| if (clip != null) |
| { |
| Rectangle r; |
| r = clip.intersection (new Rectangle (x, y, width, height)); |
| if (r.width == 0 && r.height == 0) |
| return; |
| |
| offset += r.y * scansize + r.x; |
| |
| width = r.width; |
| height = r.height; |
| x = r.x; |
| y = r.y; |
| } |
| |
| drawPixels (gc, redBG, greenBG, blueBG, |
| startX + x, startY + y, |
| width, height, convertPixels (pixels, model), offset, |
| scansize, affine); |
| |
| if (observer != null) |
| observer.imageUpdate (image, |
| ImageObserver.SOMEBITS, |
| x, y, width, height); |
| } |
| |
| public void |
| setPixels (int x, int y, int width, int height, ColorModel model, |
| byte[] pixels, int offset, int scansize) |
| { |
| setPixels (x, y, width, height, ColorModel.getRGBdefault(), |
| convertPixels (pixels, model), offset, scansize); |
| } |
| |
| public void |
| setDimensions (int width, int height) |
| { |
| if (!flipX && !flipY && |
| ((this.width == -1 && this.height == -1) |
| || (this.width == width && this.height == height))) |
| return; |
| |
| affine = new double[6]; |
| affine[1] = affine[2] = affine[4] = affine[5] = 0; |
| |
| if (clip != null) |
| { |
| affine[0] = this.width / (double) s_width; |
| affine[3] = this.height / (double) s_height; |
| } |
| else |
| { |
| affine[0] = this.width / (double) width; |
| affine[3] = this.height / (double) height; |
| } |
| |
| if (flipX) |
| { |
| affine[0] = -affine[0]; |
| affine[4] = this.width; |
| } |
| |
| if (flipY) |
| { |
| affine[3] = -affine[3]; |
| affine[5] = this.height; |
| } |
| |
| if (affine[0] == 1 && affine[3] == 1) |
| affine = null; |
| } |
| |
| public void |
| setProperties (Hashtable props) |
| { |
| } |
| |
| public void |
| setColorModel (ColorModel model) |
| { |
| } |
| |
| public void |
| setHints (int flags) |
| { |
| } |
| |
| public void |
| imageComplete (int status) |
| { |
| image.imageComplete(status); |
| |
| if (observer != null) |
| { |
| if (status == ImageConsumer.IMAGEERROR) |
| observer.imageUpdate (null, |
| ImageObserver.ERROR, |
| -1, -1, -1, -1); |
| else |
| observer.imageUpdate (null, |
| ImageObserver.ALLBITS, |
| -1, -1, -1, -1); |
| } |
| } |
| } |