ref: a8d0595bcd1da3e2faad92e378d8366b5a93ae5e
dir: /external/glfw/src/wl_monitor.c/
//========================================================================
// GLFW 3.3 Wayland - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
//
// 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.
//
//========================================================================
// It is fine to use C99 in this file because it will not be built with VS
//========================================================================
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>
static void outputHandleGeometry(void* data,
struct wl_output* output,
int32_t x,
int32_t y,
int32_t physicalWidth,
int32_t physicalHeight,
int32_t subpixel,
const char* make,
const char* model,
int32_t transform)
{
struct _GLFWmonitor *monitor = data;
char name[1024];
monitor->wl.x = x;
monitor->wl.y = y;
monitor->widthMM = physicalWidth;
monitor->heightMM = physicalHeight;
snprintf(name, sizeof(name), "%s %s", make, model);
monitor->name = _glfw_strdup(name);
}
static void outputHandleMode(void* data,
struct wl_output* output,
uint32_t flags,
int32_t width,
int32_t height,
int32_t refresh)
{
struct _GLFWmonitor *monitor = data;
GLFWvidmode mode;
mode.width = width;
mode.height = height;
mode.redBits = 8;
mode.greenBits = 8;
mode.blueBits = 8;
mode.refreshRate = (int) round(refresh / 1000.0);
monitor->modeCount++;
monitor->modes =
realloc(monitor->modes, monitor->modeCount * sizeof(GLFWvidmode));
monitor->modes[monitor->modeCount - 1] = mode;
if (flags & WL_OUTPUT_MODE_CURRENT)
monitor->wl.currentMode = monitor->modeCount - 1;
}
static void outputHandleDone(void* data, struct wl_output* output)
{
struct _GLFWmonitor *monitor = data;
_glfwInputMonitor(monitor, GLFW_CONNECTED, _GLFW_INSERT_LAST);
}
static void outputHandleScale(void* data,
struct wl_output* output,
int32_t factor)
{
struct _GLFWmonitor *monitor = data;
monitor->wl.scale = factor;
}
static const struct wl_output_listener outputListener = {
outputHandleGeometry,
outputHandleMode,
outputHandleDone,
outputHandleScale,
};
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
void _glfwAddOutputWayland(uint32_t name, uint32_t version)
{
_GLFWmonitor *monitor;
struct wl_output *output;
if (version < 2)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Unsupported output interface version");
return;
}
// The actual name of this output will be set in the geometry handler.
monitor = _glfwAllocMonitor(NULL, 0, 0);
output = wl_registry_bind(_glfw.wl.registry,
name,
&wl_output_interface,
2);
if (!output)
{
_glfwFreeMonitor(monitor);
return;
}
monitor->wl.scale = 1;
monitor->wl.output = output;
monitor->wl.name = name;
wl_output_add_listener(output, &outputListener, monitor);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor)
{
if (monitor->wl.output)
wl_output_destroy(monitor->wl.output);
}
void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
{
if (xpos)
*xpos = monitor->wl.x;
if (ypos)
*ypos = monitor->wl.y;
}
void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor,
float* xscale, float* yscale)
{
if (xscale)
*xscale = (float) monitor->wl.scale;
if (yscale)
*yscale = (float) monitor->wl.scale;
}
void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor,
int* xpos, int* ypos,
int* width, int* height)
{
if (xpos)
*xpos = monitor->wl.x;
if (ypos)
*ypos = monitor->wl.y;
if (width)
*width = monitor->modes[monitor->wl.currentMode].width;
if (height)
*height = monitor->modes[monitor->wl.currentMode].height;
}
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* found)
{
*found = monitor->modeCount;
return monitor->modes;
}
void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode)
{
*mode = monitor->modes[monitor->wl.currentMode];
}
GLFWbool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Gamma ramp access is not available");
return GLFW_FALSE;
}
void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor,
const GLFWgammaramp* ramp)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Gamma ramp access is not available");
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI struct wl_output* glfwGetWaylandMonitor(GLFWmonitor* handle)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return monitor->wl.output;
}