diff options
Diffstat (limited to 'glfw-3.2.1/src/win32_monitor.c')
| -rw-r--r-- | glfw-3.2.1/src/win32_monitor.c | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/glfw-3.2.1/src/win32_monitor.c b/glfw-3.2.1/src/win32_monitor.c new file mode 100644 index 0000000..e55c9a7 --- /dev/null +++ b/glfw-3.2.1/src/win32_monitor.c @@ -0,0 +1,401 @@ +//======================================================================== +// GLFW 3.2 Win32 - www.glfw.org +//------------------------------------------------------------------------ +// Copyright (c) 2002-2006 Marcus Geelnard +// Copyright (c) 2006-2016 Camilla Berglund <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. +// +//======================================================================== + +#include "internal.h" + +#include <stdlib.h> +#include <string.h> +#include <limits.h> +#include <malloc.h> + + +// Create monitor from an adapter and (optionally) a display +// +static _GLFWmonitor* createMonitor(DISPLAY_DEVICEW* adapter, + DISPLAY_DEVICEW* display) +{ + _GLFWmonitor* monitor; + char* name; + HDC dc; + + if (display) + name = _glfwCreateUTF8FromWideStringWin32(display->DeviceString); + else + name = _glfwCreateUTF8FromWideStringWin32(adapter->DeviceString); + if (!name) + { + _glfwInputError(GLFW_PLATFORM_ERROR, + "Win32: Failed to convert string to UTF-8"); + return NULL; + } + + dc = CreateDCW(L"DISPLAY", adapter->DeviceName, NULL, NULL); + + monitor = _glfwAllocMonitor(name, + GetDeviceCaps(dc, HORZSIZE), + GetDeviceCaps(dc, VERTSIZE)); + + DeleteDC(dc); + free(name); + + if (adapter->StateFlags & DISPLAY_DEVICE_MODESPRUNED) + monitor->win32.modesPruned = GLFW_TRUE; + + wcscpy(monitor->win32.adapterName, adapter->DeviceName); + WideCharToMultiByte(CP_UTF8, 0, + adapter->DeviceName, -1, + monitor->win32.publicAdapterName, + sizeof(monitor->win32.publicAdapterName), + NULL, NULL); + + if (display) + { + wcscpy(monitor->win32.displayName, display->DeviceName); + WideCharToMultiByte(CP_UTF8, 0, + display->DeviceName, -1, + monitor->win32.publicDisplayName, + sizeof(monitor->win32.publicDisplayName), + NULL, NULL); + } + + return monitor; +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW internal API ////// +////////////////////////////////////////////////////////////////////////// + +// Change the current video mode +// +GLFWbool _glfwSetVideoModeWin32(_GLFWmonitor* monitor, const GLFWvidmode* desired) +{ + GLFWvidmode current; + const GLFWvidmode* best; + DEVMODEW dm; + + best = _glfwChooseVideoMode(monitor, desired); + _glfwPlatformGetVideoMode(monitor, ¤t); + if (_glfwCompareVideoModes(¤t, best) == 0) + return GLFW_TRUE; + + ZeroMemory(&dm, sizeof(dm)); + dm.dmSize = sizeof(DEVMODEW); + dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | + DM_DISPLAYFREQUENCY; + dm.dmPelsWidth = best->width; + dm.dmPelsHeight = best->height; + dm.dmBitsPerPel = best->redBits + best->greenBits + best->blueBits; + dm.dmDisplayFrequency = best->refreshRate; + + if (dm.dmBitsPerPel < 15 || dm.dmBitsPerPel >= 24) + dm.dmBitsPerPel = 32; + + if (ChangeDisplaySettingsExW(monitor->win32.adapterName, + &dm, + NULL, + CDS_FULLSCREEN, + NULL) != DISP_CHANGE_SUCCESSFUL) + { + _glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to set video mode"); + return GLFW_FALSE; + } + + monitor->win32.modeChanged = GLFW_TRUE; + return GLFW_TRUE; +} + +// Restore the previously saved (original) video mode +// +void _glfwRestoreVideoModeWin32(_GLFWmonitor* monitor) +{ + if (monitor->win32.modeChanged) + { + ChangeDisplaySettingsExW(monitor->win32.adapterName, + NULL, NULL, CDS_FULLSCREEN, NULL); + monitor->win32.modeChanged = GLFW_FALSE; + } +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW platform API ////// +////////////////////////////////////////////////////////////////////////// + +_GLFWmonitor** _glfwPlatformGetMonitors(int* count) +{ + int found = 0; + DWORD adapterIndex, displayIndex, primaryIndex = 0; + DISPLAY_DEVICEW adapter, display; + GLFWbool hasDisplays = GLFW_FALSE; + _GLFWmonitor** monitors = NULL; + + *count = 0; + + // HACK: Check if any active adapters have connected displays + // If not, this is a headless system or a VMware guest + + for (adapterIndex = 0; ; adapterIndex++) + { + ZeroMemory(&adapter, sizeof(DISPLAY_DEVICEW)); + adapter.cb = sizeof(DISPLAY_DEVICEW); + + if (!EnumDisplayDevicesW(NULL, adapterIndex, &adapter, 0)) + break; + + if (!(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE)) + continue; + + ZeroMemory(&display, sizeof(DISPLAY_DEVICEW)); + display.cb = sizeof(DISPLAY_DEVICEW); + + if (EnumDisplayDevicesW(adapter.DeviceName, 0, &display, 0)) + { + hasDisplays = GLFW_TRUE; + break; + } + } + + for (adapterIndex = 0; ; adapterIndex++) + { + ZeroMemory(&adapter, sizeof(DISPLAY_DEVICEW)); + adapter.cb = sizeof(DISPLAY_DEVICEW); + + if (!EnumDisplayDevicesW(NULL, adapterIndex, &adapter, 0)) + break; + + if (!(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE)) + continue; + + if (adapter.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) + primaryIndex = found; + + if (hasDisplays) + { + for (displayIndex = 0; ; displayIndex++) + { + ZeroMemory(&display, sizeof(DISPLAY_DEVICEW)); + display.cb = sizeof(DISPLAY_DEVICEW); + + if (!EnumDisplayDevicesW(adapter.DeviceName, displayIndex, &display, 0)) + break; + + found++; + monitors = realloc(monitors, sizeof(_GLFWmonitor*) * found); + monitors[found - 1] = createMonitor(&adapter, &display); + } + } + else + { + found++; + monitors = realloc(monitors, sizeof(_GLFWmonitor*) * found); + monitors[found - 1] = createMonitor(&adapter, NULL); + } + } + + _GLFW_SWAP_POINTERS(monitors[0], monitors[primaryIndex]); + + *count = found; + return monitors; +} + +GLFWbool _glfwPlatformIsSameMonitor(_GLFWmonitor* first, _GLFWmonitor* second) +{ + if (wcslen(first->win32.displayName)) + return wcscmp(first->win32.displayName, second->win32.displayName) == 0; + else + return wcscmp(first->win32.adapterName, second->win32.adapterName) == 0; +} + +void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos) +{ + DEVMODEW settings; + ZeroMemory(&settings, sizeof(DEVMODEW)); + settings.dmSize = sizeof(DEVMODEW); + + EnumDisplaySettingsExW(monitor->win32.adapterName, + ENUM_CURRENT_SETTINGS, + &settings, + EDS_ROTATEDMODE); + + if (xpos) + *xpos = settings.dmPosition.x; + if (ypos) + *ypos = settings.dmPosition.y; +} + +GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count) +{ + int modeIndex = 0, size = 0; + GLFWvidmode* result = NULL; + + *count = 0; + + for (;;) + { + int i; + GLFWvidmode mode; + DEVMODEW dm; + + ZeroMemory(&dm, sizeof(DEVMODEW)); + dm.dmSize = sizeof(DEVMODEW); + + if (!EnumDisplaySettingsW(monitor->win32.adapterName, modeIndex, &dm)) + break; + + modeIndex++; + + // Skip modes with less than 15 BPP + if (dm.dmBitsPerPel < 15) + continue; + + mode.width = dm.dmPelsWidth; + mode.height = dm.dmPelsHeight; + mode.refreshRate = dm.dmDisplayFrequency; + _glfwSplitBPP(dm.dmBitsPerPel, + &mode.redBits, + &mode.greenBits, + &mode.blueBits); + + for (i = 0; i < *count; i++) + { + if (_glfwCompareVideoModes(result + i, &mode) == 0) + break; + } + + // Skip duplicate modes + if (i < *count) + continue; + + if (monitor->win32.modesPruned) + { + // Skip modes not supported by the connected displays + if (ChangeDisplaySettingsExW(monitor->win32.adapterName, + &dm, + NULL, + CDS_TEST, + NULL) != DISP_CHANGE_SUCCESSFUL) + { + continue; + } + } + + if (*count == size) + { + size += 128; + result = (GLFWvidmode*) realloc(result, size * sizeof(GLFWvidmode)); + } + + (*count)++; + result[*count - 1] = mode; + } + + if (!*count) + { + // HACK: Report the current mode if no valid modes were found + result = calloc(1, sizeof(GLFWvidmode)); + _glfwPlatformGetVideoMode(monitor, result); + *count = 1; + } + + return result; +} + +void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode) +{ + DEVMODEW dm; + + ZeroMemory(&dm, sizeof(DEVMODEW)); + dm.dmSize = sizeof(DEVMODEW); + + EnumDisplaySettingsW(monitor->win32.adapterName, ENUM_CURRENT_SETTINGS, &dm); + + mode->width = dm.dmPelsWidth; + mode->height = dm.dmPelsHeight; + mode->refreshRate = dm.dmDisplayFrequency; + _glfwSplitBPP(dm.dmBitsPerPel, + &mode->redBits, + &mode->greenBits, + &mode->blueBits); +} + +void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp) +{ + HDC dc; + WORD values[768]; + + dc = CreateDCW(L"DISPLAY", monitor->win32.adapterName, NULL, NULL); + GetDeviceGammaRamp(dc, values); + DeleteDC(dc); + + _glfwAllocGammaArrays(ramp, 256); + + memcpy(ramp->red, values + 0, 256 * sizeof(unsigned short)); + memcpy(ramp->green, values + 256, 256 * sizeof(unsigned short)); + memcpy(ramp->blue, values + 512, 256 * sizeof(unsigned short)); +} + +void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp) +{ + HDC dc; + WORD values[768]; + + if (ramp->size != 256) + { + _glfwInputError(GLFW_PLATFORM_ERROR, + "Win32: Gamma ramp size must be 256"); + return; + } + + memcpy(values + 0, ramp->red, 256 * sizeof(unsigned short)); + memcpy(values + 256, ramp->green, 256 * sizeof(unsigned short)); + memcpy(values + 512, ramp->blue, 256 * sizeof(unsigned short)); + + dc = CreateDCW(L"DISPLAY", monitor->win32.adapterName, NULL, NULL); + SetDeviceGammaRamp(dc, values); + DeleteDC(dc); +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW native API ////// +////////////////////////////////////////////////////////////////////////// + +GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* handle) +{ + _GLFWmonitor* monitor = (_GLFWmonitor*) handle; + _GLFW_REQUIRE_INIT_OR_RETURN(NULL); + return monitor->win32.publicAdapterName; +} + +GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* handle) +{ + _GLFWmonitor* monitor = (_GLFWmonitor*) handle; + _GLFW_REQUIRE_INIT_OR_RETURN(NULL); + return monitor->win32.publicDisplayName; +} + |