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Add content scale queries

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This adds glfwGetWindowContentScale and glfwGetMonitorContentScale for
querying the recommended drawing scale factor for DPI-aware rendering.

Parts of this patch are based on code by @ferreiradaselva.

Fixes #235.
Fixes #439.
Fixes #677.
Fixes #845.
Fixes #898.
This commit is contained in:
Camilla Löwy
2017-08-29 19:19:00 +02:00
parent 1be81a1540
commit 16bf872117
26 changed files with 387 additions and 28 deletions
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src/monitor.c
+15
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@@ -314,6 +314,21 @@ GLFWAPI void glfwGetMonitorPhysicalSize(GLFWmonitor* handle, int* widthMM, int*
*heightMM = monitor->heightMM;
}
GLFWAPI void glfwGetMonitorContentScale(GLFWmonitor* handle,
float* xscale, float* yscale)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
assert(monitor != NULL);
if (xscale)
*xscale = 0.f;
if (yscale)
*yscale = 0.f;
_GLFW_REQUIRE_INIT();
_glfwPlatformGetMonitorContentScale(monitor, xscale, yscale);
}
GLFWAPI const char* glfwGetMonitorName(GLFWmonitor* handle)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;