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handle pixel_zoom properly

This commit is contained in:
David Rose 2008-05-09 00:07:13 +00:00
parent 53a7c78548
commit d956aee536
1 changed files with 12 additions and 10 deletions
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22
panda/src/tform/mouseWatcher.cxx
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@ -1402,12 +1402,16 @@ do_transmit_data(DataGraphTraverser *trav, const DataNodeTransmit &input,
if (_display_region != (DisplayRegion *)NULL) {
// If we've got a display region, constrain the mouse to it.
int xo, yo, width, height;
DisplayRegionPipelineReader dr_reader(_display_region, current_thread);
dr_reader.get_region_pixels_i(xo, yo, width, height);
float left, right, bottom, top;
dr_reader.get_dimensions(left, right, bottom, top);
if (p[0] < xo || p[0] >= xo + width ||
p[1] < yo || p[1] >= yo + height) {
// Need to translate this into DisplayRegion [0, 1] space
float x = (f[0] + 1.0f) / 2.0f;
float y = (f[1] + 1.0f) / 2.0f;
if (x < left || x >= right ||
y < bottom || y >= top) {
// The mouse is outside the display region, even though it's
// within the window. This is considered not having a mouse.
set_no_mouse();
@ -1417,22 +1421,20 @@ do_transmit_data(DataGraphTraverser *trav, const DataNodeTransmit &input,
} else {
// The mouse is within the display region; rescale it.
float left, right, bottom, top;
dr_reader.get_dimensions(left, right, bottom, top);
// Need to translate this into DisplayRegion [0, 1] space
float x = (f[0] + 1.0f) / 2.0f;
// Scale in DR space
float xp = (x - left) / (right - left);
// Translate back into [-1, 1] space
float xpp = (xp * 2.0f) - 1.0f;
float y = (f[1] + 1.0f) / 2.0f;
float yp = (y - bottom) / (top - bottom);
float ypp = (yp * 2.0f) - 1.0f;
int xo, yo, w, h;
dr_reader.get_region_pixels_i(xo, yo, w, h);
LVecBase2f new_f(xpp, ypp);
LVecBase2f new_p(p[0] - xo, p[1] - xo);
LVecBase2f new_p(p[0] - xo, p[1] - yo);
set_mouse(new_f, new_p);
}