diff options
Diffstat (limited to 'java/org/gnu/emacs/EmacsCopyArea.java')
| -rw-r--r-- | java/org/gnu/emacs/EmacsCopyArea.java | 131 |
1 files changed, 51 insertions, 80 deletions
diff --git a/java/org/gnu/emacs/EmacsCopyArea.java b/java/org/gnu/emacs/EmacsCopyArea.java index 0dd5b2c1fb6..00e817bb97d 100644 --- a/java/org/gnu/emacs/EmacsCopyArea.java +++ b/java/org/gnu/emacs/EmacsCopyArea.java @@ -27,54 +27,16 @@ import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.Xfermode; -public class EmacsCopyArea implements EmacsPaintReq +public class EmacsCopyArea { - private int src_x, src_y, dest_x, dest_y, width, height; - private EmacsDrawable destination, source; - private EmacsGC immutableGC; - private static Xfermode xorAlu, srcInAlu, overAlu; + private static Xfermode overAlu; static { overAlu = new PorterDuffXfermode (Mode.SRC_OVER); - xorAlu = new PorterDuffXfermode (Mode.XOR); - srcInAlu = new PorterDuffXfermode (Mode.SRC_IN); }; - public - EmacsCopyArea (EmacsDrawable source, EmacsDrawable destination, - int src_x, int src_y, int width, int height, - int dest_x, int dest_y, EmacsGC immutableGC) - { - Bitmap bitmap; - - this.destination = destination; - this.source = source; - this.src_x = src_x; - this.src_y = src_y; - this.width = width; - this.height = height; - this.dest_x = dest_x; - this.dest_y = dest_y; - this.immutableGC = immutableGC; - } - - @Override - public Rect - getRect () - { - return new Rect (dest_x, dest_y, dest_x + width, - dest_y + height); - } - - @Override - public EmacsDrawable - getDrawable () - { - return destination; - } - - private void + private static void insetRectBy (Rect rect, int left, int top, int right, int bottom) { @@ -84,30 +46,38 @@ public class EmacsCopyArea implements EmacsPaintReq rect.bottom -= bottom; } - @Override - public EmacsGC - getGC () - { - return immutableGC; - } - - @Override - public void - paintTo (Canvas canvas, Paint paint, EmacsGC immutableGC) + public static void + perform (EmacsDrawable source, EmacsGC gc, + EmacsDrawable destination, + int src_x, int src_y, int width, int height, + int dest_x, int dest_y) { - int alu; + int i; Bitmap bitmap; - Paint maskPaint; - Canvas maskCanvas; + Paint maskPaint, paint; + Canvas maskCanvas, canvas; Bitmap srcBitmap, maskBitmap, clipBitmap; Rect rect, maskRect, srcRect, dstRect, maskDestRect; boolean needFill; /* TODO implement stippling. */ - if (immutableGC.fill_style == EmacsGC.GC_FILL_OPAQUE_STIPPLED) + if (gc.fill_style == EmacsGC.GC_FILL_OPAQUE_STIPPLED) return; - alu = immutableGC.function; + paint = gc.gcPaint; + + canvas = destination.lockCanvas (); + + if (canvas == null) + return; + + canvas.save (); + + if (gc.real_clip_rects != null) + { + for (i = 0; i < gc.real_clip_rects.length; ++i) + canvas.clipRect (gc.real_clip_rects[i]); + } /* A copy must be created or drawBitmap could end up overwriting itself. */ @@ -137,14 +107,10 @@ public class EmacsCopyArea implements EmacsPaintReq if (src_y + height > srcBitmap.getHeight ()) height = srcBitmap.getHeight () - src_y; - rect = getRect (); - - if (alu == EmacsGC.GC_COPY) - paint.setXfermode (null); - else - paint.setXfermode (xorAlu); + rect = new Rect (dest_x, dest_y, dest_x + width, + dest_y + height); - if (immutableGC.clip_mask == null) + if (gc.clip_mask == null) { bitmap = Bitmap.createBitmap (srcBitmap, src_x, src_y, width, @@ -156,17 +122,17 @@ public class EmacsCopyArea implements EmacsPaintReq /* Drawing with a clip mask involves calculating the intersection of the clip mask with the dst rect, and extrapolating the corresponding part of the src rect. */ - clipBitmap = immutableGC.clip_mask.bitmap; + clipBitmap = gc.clip_mask.bitmap; dstRect = new Rect (dest_x, dest_y, dest_x + width, dest_y + height); - maskRect = new Rect (immutableGC.clip_x_origin, - immutableGC.clip_y_origin, - (immutableGC.clip_x_origin + maskRect = new Rect (gc.clip_x_origin, + gc.clip_y_origin, + (gc.clip_x_origin + clipBitmap.getWidth ()), - (immutableGC.clip_y_origin + (gc.clip_y_origin + clipBitmap.getHeight ())); - clipBitmap = immutableGC.clip_mask.bitmap; + clipBitmap = gc.clip_mask.bitmap; if (!maskRect.setIntersect (dstRect, maskRect)) /* There is no intersection between the clip mask and the @@ -191,20 +157,21 @@ public class EmacsCopyArea implements EmacsPaintReq /* Draw the mask onto the maskBitmap. */ maskCanvas = new Canvas (maskBitmap); - maskRect.offset (-immutableGC.clip_x_origin, - -immutableGC.clip_y_origin); - maskCanvas.drawBitmap (immutableGC.clip_mask.bitmap, - maskRect, new Rect (0, 0, - maskRect.width (), - maskRect.height ()), - paint); - maskRect.offset (immutableGC.clip_x_origin, - immutableGC.clip_y_origin); + maskPaint = new Paint (); + maskRect.offset (-gc.clip_x_origin, + -gc.clip_y_origin); + maskCanvas.drawBitmap (gc.clip_mask.bitmap, + maskRect, + new Rect (0, 0, + maskRect.width (), + maskRect.height ()), + maskPaint); + maskRect.offset (gc.clip_x_origin, + gc.clip_y_origin); /* Set the transfer mode to SRC_IN to preserve only the parts of the source that overlap with the mask. */ - maskPaint = new Paint (); - maskPaint.setXfermode (srcInAlu); + maskPaint.setXfermode (EmacsGC.srcInAlu); /* Draw the source. */ maskDestRect = new Rect (0, 0, srcRect.width (), @@ -215,6 +182,10 @@ public class EmacsCopyArea implements EmacsPaintReq /* Finally, draw the mask bitmap to the destination. */ paint.setXfermode (overAlu); canvas.drawBitmap (maskBitmap, null, maskRect, paint); + gc.resetXfermode (); } + + canvas.restore (); + destination.damageRect (rect); } } |