545 lines
15 KiB
C
545 lines
15 KiB
C
//========================================================================
|
|
// GLFW 3.3 - www.glfw.org
|
|
//------------------------------------------------------------------------
|
|
// Copyright (c) 2002-2006 Marcus Geelnard
|
|
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
// Please use C89 style variable declarations in this file because VS 2010
|
|
//========================================================================
|
|
|
|
#include "internal.h"
|
|
|
|
#include <assert.h>
|
|
#include <math.h>
|
|
#include <float.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <limits.h>
|
|
|
|
|
|
// Lexically compare video modes, used by qsort
|
|
//
|
|
static int compareVideoModes(const void* fp, const void* sp)
|
|
{
|
|
const GLFWvidmode* fm = fp;
|
|
const GLFWvidmode* sm = sp;
|
|
const int fbpp = fm->redBits + fm->greenBits + fm->blueBits;
|
|
const int sbpp = sm->redBits + sm->greenBits + sm->blueBits;
|
|
const int farea = fm->width * fm->height;
|
|
const int sarea = sm->width * sm->height;
|
|
|
|
// First sort on color bits per pixel
|
|
if (fbpp != sbpp)
|
|
return fbpp - sbpp;
|
|
|
|
// Then sort on screen area
|
|
if (farea != sarea)
|
|
return farea - sarea;
|
|
|
|
// Then sort on width
|
|
if (fm->width != sm->width)
|
|
return fm->width - sm->width;
|
|
|
|
// Lastly sort on refresh rate
|
|
return fm->refreshRate - sm->refreshRate;
|
|
}
|
|
|
|
// Retrieves the available modes for the specified monitor
|
|
//
|
|
static GLFWbool refreshVideoModes(_GLFWmonitor* monitor)
|
|
{
|
|
int modeCount;
|
|
GLFWvidmode* modes;
|
|
|
|
if (monitor->modes)
|
|
return GLFW_TRUE;
|
|
|
|
modes = _glfwPlatformGetVideoModes(monitor, &modeCount);
|
|
if (!modes)
|
|
return GLFW_FALSE;
|
|
|
|
qsort(modes, modeCount, sizeof(GLFWvidmode), compareVideoModes);
|
|
|
|
free(monitor->modes);
|
|
monitor->modes = modes;
|
|
monitor->modeCount = modeCount;
|
|
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW event API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Notifies shared code of a monitor connection or disconnection
|
|
//
|
|
void _glfwInputMonitor(_GLFWmonitor* monitor, int action, int placement)
|
|
{
|
|
if (action == GLFW_CONNECTED)
|
|
{
|
|
_glfw.monitorCount++;
|
|
_glfw.monitors =
|
|
realloc(_glfw.monitors, sizeof(_GLFWmonitor*) * _glfw.monitorCount);
|
|
|
|
if (placement == _GLFW_INSERT_FIRST)
|
|
{
|
|
memmove(_glfw.monitors + 1,
|
|
_glfw.monitors,
|
|
((size_t) _glfw.monitorCount - 1) * sizeof(_GLFWmonitor*));
|
|
_glfw.monitors[0] = monitor;
|
|
}
|
|
else
|
|
_glfw.monitors[_glfw.monitorCount - 1] = monitor;
|
|
}
|
|
else if (action == GLFW_DISCONNECTED)
|
|
{
|
|
int i;
|
|
_GLFWwindow* window;
|
|
|
|
for (window = _glfw.windowListHead; window; window = window->next)
|
|
{
|
|
if (window->monitor == monitor)
|
|
{
|
|
int width, height, xoff, yoff;
|
|
_glfwPlatformGetWindowSize(window, &width, &height);
|
|
_glfwPlatformSetWindowMonitor(window, NULL, 0, 0, width, height, 0);
|
|
_glfwPlatformGetWindowFrameSize(window, &xoff, &yoff, NULL, NULL);
|
|
_glfwPlatformSetWindowPos(window, xoff, yoff);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < _glfw.monitorCount; i++)
|
|
{
|
|
if (_glfw.monitors[i] == monitor)
|
|
{
|
|
_glfw.monitorCount--;
|
|
memmove(_glfw.monitors + i,
|
|
_glfw.monitors + i + 1,
|
|
((size_t) _glfw.monitorCount - i) * sizeof(_GLFWmonitor*));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_glfw.callbacks.monitor)
|
|
_glfw.callbacks.monitor((GLFWmonitor*) monitor, action);
|
|
|
|
if (action == GLFW_DISCONNECTED)
|
|
_glfwFreeMonitor(monitor);
|
|
}
|
|
|
|
// Notifies shared code that a full screen window has acquired or released
|
|
// a monitor
|
|
//
|
|
void _glfwInputMonitorWindow(_GLFWmonitor* monitor, _GLFWwindow* window)
|
|
{
|
|
monitor->window = window;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW internal API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Allocates and returns a monitor object with the specified name and dimensions
|
|
//
|
|
_GLFWmonitor* _glfwAllocMonitor(const char* name, int widthMM, int heightMM)
|
|
{
|
|
_GLFWmonitor* monitor = calloc(1, sizeof(_GLFWmonitor));
|
|
monitor->widthMM = widthMM;
|
|
monitor->heightMM = heightMM;
|
|
|
|
if (name)
|
|
monitor->name = _glfw_strdup(name);
|
|
|
|
return monitor;
|
|
}
|
|
|
|
// Frees a monitor object and any data associated with it
|
|
//
|
|
void _glfwFreeMonitor(_GLFWmonitor* monitor)
|
|
{
|
|
if (monitor == NULL)
|
|
return;
|
|
|
|
_glfwPlatformFreeMonitor(monitor);
|
|
|
|
_glfwFreeGammaArrays(&monitor->originalRamp);
|
|
_glfwFreeGammaArrays(&monitor->currentRamp);
|
|
|
|
free(monitor->modes);
|
|
free(monitor->name);
|
|
free(monitor);
|
|
}
|
|
|
|
// Allocates red, green and blue value arrays of the specified size
|
|
//
|
|
void _glfwAllocGammaArrays(GLFWgammaramp* ramp, unsigned int size)
|
|
{
|
|
ramp->red = calloc(size, sizeof(unsigned short));
|
|
ramp->green = calloc(size, sizeof(unsigned short));
|
|
ramp->blue = calloc(size, sizeof(unsigned short));
|
|
ramp->size = size;
|
|
}
|
|
|
|
// Frees the red, green and blue value arrays and clears the struct
|
|
//
|
|
void _glfwFreeGammaArrays(GLFWgammaramp* ramp)
|
|
{
|
|
free(ramp->red);
|
|
free(ramp->green);
|
|
free(ramp->blue);
|
|
|
|
memset(ramp, 0, sizeof(GLFWgammaramp));
|
|
}
|
|
|
|
// Chooses the video mode most closely matching the desired one
|
|
//
|
|
const GLFWvidmode* _glfwChooseVideoMode(_GLFWmonitor* monitor,
|
|
const GLFWvidmode* desired)
|
|
{
|
|
int i;
|
|
unsigned int sizeDiff, leastSizeDiff = UINT_MAX;
|
|
unsigned int rateDiff, leastRateDiff = UINT_MAX;
|
|
unsigned int colorDiff, leastColorDiff = UINT_MAX;
|
|
const GLFWvidmode* current;
|
|
const GLFWvidmode* closest = NULL;
|
|
|
|
if (!refreshVideoModes(monitor))
|
|
return NULL;
|
|
|
|
for (i = 0; i < monitor->modeCount; i++)
|
|
{
|
|
current = monitor->modes + i;
|
|
|
|
colorDiff = 0;
|
|
|
|
if (desired->redBits != GLFW_DONT_CARE)
|
|
colorDiff += abs(current->redBits - desired->redBits);
|
|
if (desired->greenBits != GLFW_DONT_CARE)
|
|
colorDiff += abs(current->greenBits - desired->greenBits);
|
|
if (desired->blueBits != GLFW_DONT_CARE)
|
|
colorDiff += abs(current->blueBits - desired->blueBits);
|
|
|
|
sizeDiff = abs((current->width - desired->width) *
|
|
(current->width - desired->width) +
|
|
(current->height - desired->height) *
|
|
(current->height - desired->height));
|
|
|
|
if (desired->refreshRate != GLFW_DONT_CARE)
|
|
rateDiff = abs(current->refreshRate - desired->refreshRate);
|
|
else
|
|
rateDiff = UINT_MAX - current->refreshRate;
|
|
|
|
if ((colorDiff < leastColorDiff) ||
|
|
(colorDiff == leastColorDiff && sizeDiff < leastSizeDiff) ||
|
|
(colorDiff == leastColorDiff && sizeDiff == leastSizeDiff && rateDiff < leastRateDiff))
|
|
{
|
|
closest = current;
|
|
leastSizeDiff = sizeDiff;
|
|
leastRateDiff = rateDiff;
|
|
leastColorDiff = colorDiff;
|
|
}
|
|
}
|
|
|
|
return closest;
|
|
}
|
|
|
|
// Performs lexical comparison between two @ref GLFWvidmode structures
|
|
//
|
|
int _glfwCompareVideoModes(const GLFWvidmode* fm, const GLFWvidmode* sm)
|
|
{
|
|
return compareVideoModes(fm, sm);
|
|
}
|
|
|
|
// Splits a color depth into red, green and blue bit depths
|
|
//
|
|
void _glfwSplitBPP(int bpp, int* red, int* green, int* blue)
|
|
{
|
|
int delta;
|
|
|
|
// We assume that by 32 the user really meant 24
|
|
if (bpp == 32)
|
|
bpp = 24;
|
|
|
|
// Convert "bits per pixel" to red, green & blue sizes
|
|
|
|
*red = *green = *blue = bpp / 3;
|
|
delta = bpp - (*red * 3);
|
|
if (delta >= 1)
|
|
*green = *green + 1;
|
|
|
|
if (delta == 2)
|
|
*red = *red + 1;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW public API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GLFWAPI GLFWmonitor** glfwGetMonitors(int* count)
|
|
{
|
|
assert(count != NULL);
|
|
|
|
*count = 0;
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
*count = _glfw.monitorCount;
|
|
return (GLFWmonitor**) _glfw.monitors;
|
|
}
|
|
|
|
GLFWAPI GLFWmonitor* glfwGetPrimaryMonitor(void)
|
|
{
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
if (!_glfw.monitorCount)
|
|
return NULL;
|
|
|
|
return (GLFWmonitor*) _glfw.monitors[0];
|
|
}
|
|
|
|
GLFWAPI void glfwGetMonitorPos(GLFWmonitor* handle, int* xpos, int* ypos)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
if (xpos)
|
|
*xpos = 0;
|
|
if (ypos)
|
|
*ypos = 0;
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
|
|
_glfwPlatformGetMonitorPos(monitor, xpos, ypos);
|
|
}
|
|
|
|
GLFWAPI void glfwGetMonitorWorkarea(GLFWmonitor* handle,
|
|
int* xpos, int* ypos,
|
|
int* width, int* height)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
if (xpos)
|
|
*xpos = 0;
|
|
if (ypos)
|
|
*ypos = 0;
|
|
if (width)
|
|
*width = 0;
|
|
if (height)
|
|
*height = 0;
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
|
|
_glfwPlatformGetMonitorWorkarea(monitor, xpos, ypos, width, height);
|
|
}
|
|
|
|
GLFWAPI void glfwGetMonitorPhysicalSize(GLFWmonitor* handle, int* widthMM, int* heightMM)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
if (widthMM)
|
|
*widthMM = 0;
|
|
if (heightMM)
|
|
*heightMM = 0;
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
|
|
if (widthMM)
|
|
*widthMM = monitor->widthMM;
|
|
if (heightMM)
|
|
*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;
|
|
assert(monitor != NULL);
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
return monitor->name;
|
|
}
|
|
|
|
GLFWAPI void glfwSetMonitorUserPointer(GLFWmonitor* handle, void* pointer)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
monitor->userPointer = pointer;
|
|
}
|
|
|
|
GLFWAPI void* glfwGetMonitorUserPointer(GLFWmonitor* handle)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
return monitor->userPointer;
|
|
}
|
|
|
|
GLFWAPI GLFWmonitorfun glfwSetMonitorCallback(GLFWmonitorfun cbfun)
|
|
{
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
_GLFW_SWAP_POINTERS(_glfw.callbacks.monitor, cbfun);
|
|
return cbfun;
|
|
}
|
|
|
|
GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* handle, int* count)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
assert(count != NULL);
|
|
|
|
*count = 0;
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
if (!refreshVideoModes(monitor))
|
|
return NULL;
|
|
|
|
*count = monitor->modeCount;
|
|
return monitor->modes;
|
|
}
|
|
|
|
GLFWAPI const GLFWvidmode* glfwGetVideoMode(GLFWmonitor* handle)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
_glfwPlatformGetVideoMode(monitor, &monitor->currentMode);
|
|
return &monitor->currentMode;
|
|
}
|
|
|
|
GLFWAPI void glfwSetGamma(GLFWmonitor* handle, float gamma)
|
|
{
|
|
unsigned int i;
|
|
unsigned short* values;
|
|
GLFWgammaramp ramp;
|
|
const GLFWgammaramp* original;
|
|
assert(handle != NULL);
|
|
assert(gamma > 0.f);
|
|
assert(gamma <= FLT_MAX);
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
|
|
if (gamma != gamma || gamma <= 0.f || gamma > FLT_MAX)
|
|
{
|
|
_glfwInputError(GLFW_INVALID_VALUE, "Invalid gamma value %f", gamma);
|
|
return;
|
|
}
|
|
|
|
original = glfwGetGammaRamp(handle);
|
|
if (!original)
|
|
return;
|
|
|
|
values = calloc(original->size, sizeof(unsigned short));
|
|
|
|
for (i = 0; i < original->size; i++)
|
|
{
|
|
float value;
|
|
|
|
// Calculate intensity
|
|
value = i / (float) (original->size - 1);
|
|
// Apply gamma curve
|
|
value = powf(value, 1.f / gamma) * 65535.f + 0.5f;
|
|
// Clamp to value range
|
|
value = _glfw_fminf(value, 65535.f);
|
|
|
|
values[i] = (unsigned short) value;
|
|
}
|
|
|
|
ramp.red = values;
|
|
ramp.green = values;
|
|
ramp.blue = values;
|
|
ramp.size = original->size;
|
|
|
|
glfwSetGammaRamp(handle, &ramp);
|
|
free(values);
|
|
}
|
|
|
|
GLFWAPI const GLFWgammaramp* glfwGetGammaRamp(GLFWmonitor* handle)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
|
|
|
|
_glfwFreeGammaArrays(&monitor->currentRamp);
|
|
if (!_glfwPlatformGetGammaRamp(monitor, &monitor->currentRamp))
|
|
return NULL;
|
|
|
|
return &monitor->currentRamp;
|
|
}
|
|
|
|
GLFWAPI void glfwSetGammaRamp(GLFWmonitor* handle, const GLFWgammaramp* ramp)
|
|
{
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
|
|
assert(monitor != NULL);
|
|
assert(ramp != NULL);
|
|
assert(ramp->size > 0);
|
|
assert(ramp->red != NULL);
|
|
assert(ramp->green != NULL);
|
|
assert(ramp->blue != NULL);
|
|
|
|
if (ramp->size <= 0)
|
|
{
|
|
_glfwInputError(GLFW_INVALID_VALUE,
|
|
"Invalid gamma ramp size %i",
|
|
ramp->size);
|
|
return;
|
|
}
|
|
|
|
_GLFW_REQUIRE_INIT();
|
|
|
|
if (!monitor->originalRamp.size)
|
|
{
|
|
if (!_glfwPlatformGetGammaRamp(monitor, &monitor->originalRamp))
|
|
return;
|
|
}
|
|
|
|
_glfwPlatformSetGammaRamp(monitor, ramp);
|
|
}
|
|
|