diff options
Diffstat (limited to 'vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/win32_monitor.c')
| -rw-r--r-- | vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/win32_monitor.c | 548 |
1 files changed, 548 insertions, 0 deletions
diff --git a/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/win32_monitor.c b/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/win32_monitor.c new file mode 100644 index 0000000..3cb3393 --- /dev/null +++ b/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/win32_monitor.c @@ -0,0 +1,548 @@ +//======================================================================== +// GLFW 3.3 Win32 - 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 <stdlib.h> +#include <string.h> +#include <limits.h> +#include <malloc.h> +#include <wchar.h> + + +// Callback for EnumDisplayMonitors in createMonitor +// +static BOOL CALLBACK monitorCallback(HMONITOR handle, + HDC dc, + RECT* rect, + LPARAM data) +{ + MONITORINFOEXW mi; + ZeroMemory(&mi, sizeof(mi)); + mi.cbSize = sizeof(mi); + + if (GetMonitorInfoW(handle, (MONITORINFO*) &mi)) + { + _GLFWmonitor* monitor = (_GLFWmonitor*) data; + if (wcscmp(mi.szDevice, monitor->win32.adapterName) == 0) + monitor->win32.handle = handle; + } + + return TRUE; +} + +// Create monitor from an adapter and (optionally) a display +// +static _GLFWmonitor* createMonitor(DISPLAY_DEVICEW* adapter, + DISPLAY_DEVICEW* display) +{ + _GLFWmonitor* monitor; + int widthMM, heightMM; + char* name; + HDC dc; + DEVMODEW dm; + RECT rect; + + if (display) + name = _glfwCreateUTF8FromWideStringWin32(display->DeviceString); + else + name = _glfwCreateUTF8FromWideStringWin32(adapter->DeviceString); + if (!name) + return NULL; + + ZeroMemory(&dm, sizeof(dm)); + dm.dmSize = sizeof(dm); + EnumDisplaySettingsW(adapter->DeviceName, ENUM_CURRENT_SETTINGS, &dm); + + dc = CreateDCW(L"DISPLAY", adapter->DeviceName, NULL, NULL); + + if (IsWindows8Point1OrGreater()) + { + widthMM = GetDeviceCaps(dc, HORZSIZE); + heightMM = GetDeviceCaps(dc, VERTSIZE); + } + else + { + widthMM = (int) (dm.dmPelsWidth * 25.4f / GetDeviceCaps(dc, LOGPIXELSX)); + heightMM = (int) (dm.dmPelsHeight * 25.4f / GetDeviceCaps(dc, LOGPIXELSY)); + } + + DeleteDC(dc); + + monitor = _glfwAllocMonitor(name, widthMM, heightMM); + 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); + } + + rect.left = dm.dmPosition.x; + rect.top = dm.dmPosition.y; + rect.right = dm.dmPosition.x + dm.dmPelsWidth; + rect.bottom = dm.dmPosition.y + dm.dmPelsHeight; + + EnumDisplayMonitors(NULL, &rect, monitorCallback, (LPARAM) monitor); + return monitor; +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW internal API ////// +////////////////////////////////////////////////////////////////////////// + +// Poll for changes in the set of connected monitors +// +void _glfwPollMonitorsWin32(void) +{ + int i, disconnectedCount; + _GLFWmonitor** disconnected = NULL; + DWORD adapterIndex, displayIndex; + DISPLAY_DEVICEW adapter, display; + _GLFWmonitor* monitor; + + disconnectedCount = _glfw.monitorCount; + if (disconnectedCount) + { + disconnected = calloc(_glfw.monitorCount, sizeof(_GLFWmonitor*)); + memcpy(disconnected, + _glfw.monitors, + _glfw.monitorCount * sizeof(_GLFWmonitor*)); + } + + for (adapterIndex = 0; ; adapterIndex++) + { + int type = _GLFW_INSERT_LAST; + + ZeroMemory(&adapter, sizeof(adapter)); + adapter.cb = sizeof(adapter); + + if (!EnumDisplayDevicesW(NULL, adapterIndex, &adapter, 0)) + break; + + if (!(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE)) + continue; + + if (adapter.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) + type = _GLFW_INSERT_FIRST; + + for (displayIndex = 0; ; displayIndex++) + { + ZeroMemory(&display, sizeof(display)); + display.cb = sizeof(display); + + if (!EnumDisplayDevicesW(adapter.DeviceName, displayIndex, &display, 0)) + break; + + if (!(display.StateFlags & DISPLAY_DEVICE_ACTIVE)) + continue; + + for (i = 0; i < disconnectedCount; i++) + { + if (disconnected[i] && + wcscmp(disconnected[i]->win32.displayName, + display.DeviceName) == 0) + { + disconnected[i] = NULL; + // handle may have changed, update + EnumDisplayMonitors(NULL, NULL, monitorCallback, (LPARAM) _glfw.monitors[i]); + break; + } + } + + if (i < disconnectedCount) + continue; + + monitor = createMonitor(&adapter, &display); + if (!monitor) + { + free(disconnected); + return; + } + + _glfwInputMonitor(monitor, GLFW_CONNECTED, type); + + type = _GLFW_INSERT_LAST; + } + + // HACK: If an active adapter does not have any display devices + // (as sometimes happens), add it directly as a monitor + if (displayIndex == 0) + { + for (i = 0; i < disconnectedCount; i++) + { + if (disconnected[i] && + wcscmp(disconnected[i]->win32.adapterName, + adapter.DeviceName) == 0) + { + disconnected[i] = NULL; + break; + } + } + + if (i < disconnectedCount) + continue; + + monitor = createMonitor(&adapter, NULL); + if (!monitor) + { + free(disconnected); + return; + } + + _glfwInputMonitor(monitor, GLFW_CONNECTED, type); + } + } + + for (i = 0; i < disconnectedCount; i++) + { + if (disconnected[i]) + _glfwInputMonitor(disconnected[i], GLFW_DISCONNECTED, 0); + } + + free(disconnected); +} + +// Change the current video mode +// +void _glfwSetVideoModeWin32(_GLFWmonitor* monitor, const GLFWvidmode* desired) +{ + GLFWvidmode current; + const GLFWvidmode* best; + DEVMODEW dm; + LONG result; + + best = _glfwChooseVideoMode(monitor, desired); + _glfwPlatformGetVideoMode(monitor, ¤t); + if (_glfwCompareVideoModes(¤t, best) == 0) + return; + + ZeroMemory(&dm, sizeof(dm)); + dm.dmSize = sizeof(dm); + 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; + + result = ChangeDisplaySettingsExW(monitor->win32.adapterName, + &dm, + NULL, + CDS_FULLSCREEN, + NULL); + if (result == DISP_CHANGE_SUCCESSFUL) + monitor->win32.modeChanged = GLFW_TRUE; + else + { + const char* description = "Unknown error"; + + if (result == DISP_CHANGE_BADDUALVIEW) + description = "The system uses DualView"; + else if (result == DISP_CHANGE_BADFLAGS) + description = "Invalid flags"; + else if (result == DISP_CHANGE_BADMODE) + description = "Graphics mode not supported"; + else if (result == DISP_CHANGE_BADPARAM) + description = "Invalid parameter"; + else if (result == DISP_CHANGE_FAILED) + description = "Graphics mode failed"; + else if (result == DISP_CHANGE_NOTUPDATED) + description = "Failed to write to registry"; + else if (result == DISP_CHANGE_RESTART) + description = "Computer restart required"; + + _glfwInputError(GLFW_PLATFORM_ERROR, + "Win32: Failed to set video mode: %s", + description); + } +} + +// 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; + } +} + +void _glfwGetMonitorContentScaleWin32(HMONITOR handle, float* xscale, float* yscale) +{ + UINT xdpi, ydpi; + + if (xscale) + *xscale = 0.f; + if (yscale) + *yscale = 0.f; + + if (IsWindows8Point1OrGreater()) + { + if (GetDpiForMonitor(handle, MDT_EFFECTIVE_DPI, &xdpi, &ydpi) != S_OK) + { + _glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to query monitor DPI"); + return; + } + } + else + { + const HDC dc = GetDC(NULL); + xdpi = GetDeviceCaps(dc, LOGPIXELSX); + ydpi = GetDeviceCaps(dc, LOGPIXELSY); + ReleaseDC(NULL, dc); + } + + if (xscale) + *xscale = xdpi / (float) USER_DEFAULT_SCREEN_DPI; + if (yscale) + *yscale = ydpi / (float) USER_DEFAULT_SCREEN_DPI; +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW platform API ////// +////////////////////////////////////////////////////////////////////////// + +void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor) +{ +} + +void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos) +{ + DEVMODEW dm; + ZeroMemory(&dm, sizeof(dm)); + dm.dmSize = sizeof(dm); + + EnumDisplaySettingsExW(monitor->win32.adapterName, + ENUM_CURRENT_SETTINGS, + &dm, + EDS_ROTATEDMODE); + + if (xpos) + *xpos = dm.dmPosition.x; + if (ypos) + *ypos = dm.dmPosition.y; +} + +void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor, + float* xscale, float* yscale) +{ + _glfwGetMonitorContentScaleWin32(monitor->win32.handle, xscale, yscale); +} + +void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor, + int* xpos, int* ypos, + int* width, int* height) +{ + MONITORINFO mi = { sizeof(mi) }; + GetMonitorInfo(monitor->win32.handle, &mi); + + if (xpos) + *xpos = mi.rcWork.left; + if (ypos) + *ypos = mi.rcWork.top; + if (width) + *width = mi.rcWork.right - mi.rcWork.left; + if (height) + *height = mi.rcWork.bottom - mi.rcWork.top; +} + +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(dm)); + dm.dmSize = sizeof(dm); + + 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(dm)); + dm.dmSize = sizeof(dm); + + 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); +} + +GLFWbool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp) +{ + HDC dc; + WORD values[3][256]; + + dc = CreateDCW(L"DISPLAY", monitor->win32.adapterName, NULL, NULL); + GetDeviceGammaRamp(dc, values); + DeleteDC(dc); + + _glfwAllocGammaArrays(ramp, 256); + + memcpy(ramp->red, values[0], sizeof(values[0])); + memcpy(ramp->green, values[1], sizeof(values[1])); + memcpy(ramp->blue, values[2], sizeof(values[2])); + + return GLFW_TRUE; +} + +void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp) +{ + HDC dc; + WORD values[3][256]; + + if (ramp->size != 256) + { + _glfwInputError(GLFW_PLATFORM_ERROR, + "Win32: Gamma ramp size must be 256"); + return; + } + + memcpy(values[0], ramp->red, sizeof(values[0])); + memcpy(values[1], ramp->green, sizeof(values[1])); + memcpy(values[2], ramp->blue, sizeof(values[2])); + + 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; +} + |