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Added opt-in support for high-dpi mode in OS X when on a retina display (resolves issue #761).

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Added a ‘highdpi’ boolean flag to t.window/love.window.setMode (defaults to false.)
When the window is actually in high-dpi mode on a supported display, the graphics width and height and the mouse position are in pixels, rather than ‘window coordinates’.

Added love.window.getPixelScale. Returns the scale factor of the window from user-space points to pixels (e.g. it will be 1 normally, and 2 on a retina display in OS X with high-dpi mode enabled.)
This commit is contained in:
Alex Szpakowski
2014-01-17 21:11:20 -04:00
parent 29f47d9a10
commit 309193895a
10 changed files with 308 additions and 148 deletions
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src/modules/event/sdl/Event.cpp
+45 -9
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@@ -37,6 +37,24 @@ namespace event
namespace sdl
{
// SDL reports mouse coordinates in the window coordinate system in OS X, but
// we want them in pixel coordinates (may be different with high-DPI enabled.)
static void windowToPixelCoords(int *x, int *y)
{
double scale = 1.0;
window::Window *window = (window::Window *) Module::findInstance("love.window.");
if (window != nullptr)
scale = window->getPixelScale();
if (x != nullptr)
*x = int(double(*x) * scale);
if (y != nullptr)
*y = int(double(*x) * scale);
}
const char *Event::getName() const
{
return "love.event.sdl";
@@ -162,8 +180,11 @@ Message *Event::convert(const SDL_Event &e) const
case SDL_MOUSEBUTTONUP:
if (buttons.find(e.button.button, button) && mouse::Mouse::getConstant(button, txt))
{
arg1 = new Variant((double) e.button.x);
arg2 = new Variant((double) e.button.y);
int x = e.button.x;
int y = e.button.y;
windowToPixelCoords(&x, &y);
arg1 = new Variant((double) x);
arg2 = new Variant((double) y);
arg3 = new Variant(txt, strlen(txt));
msg = new Message((e.type == SDL_MOUSEBUTTONDOWN) ?
"mousepressed" : "mousereleased",
@@ -182,6 +203,7 @@ Message *Event::convert(const SDL_Event &e) const
int mx, my;
SDL_GetMouseState(&mx, &my);
windowToPixelCoords(&mx, &my);
arg1 = new Variant((double) mx);
arg2 = new Variant((double) my);
@@ -366,7 +388,7 @@ Message *Event::convertJoystickEvent(const SDL_Event &e) const
Message *Event::convertWindowEvent(const SDL_Event &e) const
{
Message *msg = 0;
Variant *arg1, *arg2;
Variant *arg1, *arg2, *arg3, *arg4;
window::Window *win = 0;
if (e.type != SDL_WINDOWEVENT)
@@ -402,17 +424,31 @@ Message *Event::convertWindowEvent(const SDL_Event &e) const
win = (window::Window *) Module::findInstance("love.window.");
if (win)
{
int px_w = e.window.data1;
int px_h = e.window.data2;
#if SDL_VERSION_ATLEAST(2,0,1)
SDL_Window *sdlwin = SDL_GetWindowFromID(e.window.windowID);
if (sdlwin)
SDL_GL_GetDrawableSize(sdlwin, &px_w, &px_h);
#endif
win->onWindowResize(e.window.data1, e.window.data2);
graphics::Graphics *gfx = (graphics::Graphics *) Module::findInstance("love.graphics.");
if (gfx)
gfx->setViewportSize(e.window.data1, e.window.data2);
gfx->setViewportSize(px_w, px_h);
arg1 = new Variant((double) px_w);
arg2 = new Variant((double) px_h);
arg3 = new Variant((double) e.window.data1);
arg4 = new Variant((double) e.window.data2);
msg = new Message("resize", arg1, arg2, arg3, arg4);
arg1->release();
arg2->release();
arg3->release();
arg4->release();
}
arg1 = new Variant((double) e.window.data1);
arg2 = new Variant((double) e.window.data2);
msg = new Message("resize", arg1, arg2);
arg1->release();
arg2->release();
break;
}