private void putPixels(int[] pixels, int[] background) {
final int cursorX = (int) cursorArea.getX();
final int cursorY = (int) cursorArea.getY();
final int maxY = Math.min(cursorY + cursorImage.getHeight(), graphics.getHeight());
final int maxX = Math.min(cursorX + cursorImage.getWidth(), graphics.getWidth());
final int width = cursorImage.getWidth();
int index = 0;
for (int y = cursorY; y < maxY; y++) {
int lineIndex = index;
for (int x = cursorX; x < maxX; x++) {
int color;
if (background == null) {
color = pixels[lineIndex];
} else {
final int c = pixels[lineIndex];
final boolean isTransparent = (c == 0);
color = isTransparent ? background[lineIndex] : c;
}
graphics.drawPixels(x, y, 1, color, Surface.PAINT_MODE);
lineIndex++;
}
index += width;
}
}
public void setCursorPosition(int x, int y) {
try {
// x,y corresponds to the location of the cursor's hotspot on the
// screen
// it can be anywhere in the screen area (but some part of the
// cursor might not be visible)
x = Math.min(Math.max(x, 0), graphics.getWidth() - 1);
y = Math.min(Math.max(y, 0), graphics.getHeight() - 1);
if ((cursorArea.getX() != x) || (cursorArea.getY() != y)) {
hideCursor();
if (cursorImage != null) {
int newX = (int) (x - cursorImage.getHotSpotX());
int newY = (int) (y - cursorImage.getHotSpotY());
cursorArea.setLocation(newX, newY);
} else {
cursorArea.setLocation(x, y);
}
showCursor();
}
} catch (Throwable t) {
Unsafe.debugStackTrace("error in setCursorPosition", t);
}
}
public void setCursorImage(HardwareCursor cursor) {
if (cursor == null) {
return;
}
try {
final HardwareCursorImage cursImage = cursor.getImage(20, 20);
if ((cursImage != null) && (this.cursorImage != cursImage)) {
hideCursor();
cursorArea.setSize(cursImage.getWidth(), cursImage.getHeight());
if (cursorImage != null) {
int newX =
(int) (cursorArea.getX() + cursorImage.getHotSpotX() - cursImage.getHotSpotX());
int newY =
(int) (cursorArea.getY() + cursorImage.getHotSpotY() - cursImage.getHotSpotY());
cursorArea.setLocation(newX, newY);
}
this.cursorImage = cursImage;
showCursor();
}
} catch (Throwable t) {
Unsafe.debugStackTrace("error in setCursorImage (" + t.getClass().getName() + ")", t);
}
}
public void setBitmapGraphics(BitmapGraphics graphics) {
if (this.graphics != graphics) {
hideCursor();
this.graphics = graphics;
if (cursorImage != null) {
int newHotspotX =
(int) Math.min(graphics.getWidth() - 1, cursorArea.getX() + cursorImage.getHotSpotX());
int newHotspotY =
(int) Math.min(graphics.getHeight() - 1, cursorArea.getY() + cursorImage.getHotSpotY());
cursorArea.setLocation(
newHotspotX - cursorImage.getHotSpotX(), newHotspotY - cursorImage.getHotSpotY());
}
// TODO test when screen resolution is changing
showCursor();
}
}
private void showCursor() {
if (cursorImage != null) {
if (screenBackup == null) {
screenBackup = new int[cursorImage.getWidth() * cursorImage.getHeight()];
}
// screenBackup = graphics.doGetPixels(cursorArea);
final int cursorX = (int) cursorArea.getX();
final int cursorY = (int) cursorArea.getY();
final int maxY = Math.min(cursorY + cursorImage.getHeight(), graphics.getHeight());
final int maxX = Math.min(cursorX + cursorImage.getWidth(), graphics.getWidth());
final int width = cursorImage.getWidth();
int index = 0;
for (int y = cursorY; y < maxY; y++) {
int lineIndex = index;
for (int x = cursorX; x < maxX; x++) {
screenBackup[lineIndex] = graphics.doGetPixel(x, y);
lineIndex++;
}
index += width;
}
putPixels(cursorImage.getImage(), screenBackup);
}
}