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better x11 clearing

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This commit is contained in:
David Rose 2009-09-11 18:56:46 +00:00
parent bccaeec475
commit 9f734e3cbf
1 changed files with 13 additions and 3 deletions
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16
direct/src/plugin/p3dX11SplashWindow.cxx
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@ -710,12 +710,22 @@ receive_command() {
void P3DX11SplashWindow:: void P3DX11SplashWindow::
redraw() { redraw() {
if (_composite_image == NULL) { if (_composite_image == NULL) {
// Clear the whole window, if there's no image.
XClearWindow(_display, _window); XClearWindow(_display, _window);
} else { } else {
// If we have an image, draw it.
int xo = (_win_width - _composite_width) / 2;
int yo = (_win_height - _composite_height) / 2;
XPutImage(_display, _window, _graphics_context, _composite_image, 0, 0, XPutImage(_display, _window, _graphics_context, _composite_image, 0, 0,
(_win_width - _composite_width) / 2, (_win_height - _composite_height) / 2, xo, yo, _composite_width, _composite_height);
_composite_width, _composite_height);
// Then clear the rectangles around it carefully (rather than just
// clearing the whole window first, to avoid flicking).
XClearArea(_display, _window, 0, 0, _win_width, yo, False);
XClearArea(_display, _window, 0, yo, xo, _composite_height, False);
XClearArea(_display, _window, _win_width - xo, yo, xo, _composite_height, False);
XClearArea(_display, _window, 0, _win_height - yo, _win_width, yo, False);
} }
} }
@ -768,7 +778,7 @@ make_window() {
long event_mask = long event_mask =
ButtonPressMask | ButtonReleaseMask | ButtonPressMask | ButtonReleaseMask |
PointerMotionMask | StructureNotifyMask; PointerMotionMask | StructureNotifyMask | ExposureMask;
// Initialize window attributes // Initialize window attributes
XSetWindowAttributes wa; XSetWindowAttributes wa;