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4741
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1 #include "Window.hpp"
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2 #include <gl/GL.h>
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3
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4 #pragma comment(lib, "opengl32.lib")
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5
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6 const wchar_t *Window::Window_Class_Name = L"GLTSF";
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7
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8 Window::Window() : my_Handle(0),
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9 my_Device_Context(0),
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10 my_GL_Context(0),
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11 my_Class_Registered(false),
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12 my_Listener(0)
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13 {
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14
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15 }
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16
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17 Window::~Window()
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18 {
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19 Finalize();
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20 Show_Cursor();
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21 }
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22
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23 void Window::Initialize(const std::wstring &Title, const Video_Mode &Mode, bool Fullscreen)
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24 {
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25 Finalize();
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26
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27 my_Video_Mode = Mode;
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28 if (!my_Video_Mode.Is_Valid())
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29 throw std::runtime_error("Invalid video mode");
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30
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31 my_Fullscreen = Fullscreen;
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32 Register_Class();
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33 Create_Window(Title, Mode, Fullscreen);
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34 my_IMM.Initialize(my_Handle);
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35 }
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36
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37 void Window::Finalize()
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38 {
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39 my_IMM.Finalize();
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40 Destroy_Window();
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41 Unregister_Class();
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42 }
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43
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44 void Window::Set_Listener(Window_Listener *Listener)
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45 {
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46 my_Listener = Listener;
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47 }
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48
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49 void Window::Show()
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50 {
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51 if (my_Handle)
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52 ShowWindow(my_Handle, SW_SHOW);
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53 }
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54
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55 void Window::Hide()
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56 {
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57 if (my_Handle)
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58 ShowWindow(my_Handle, SW_HIDE);
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59 }
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60
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61 void Window::Handle_Events()
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62 {
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63 MSG Message = {0};
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64 while (PeekMessageW(&Message, NULL, 0, 0, PM_REMOVE))
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65 {
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66 TranslateMessage(&Message);
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67 DispatchMessageW(&Message);
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68 }
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69 }
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70
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71 void Window::Display()
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72 {
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73 if (my_Device_Context && my_GL_Context)
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74 SwapBuffers(my_Device_Context);
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75 }
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76
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77 void Window::Show_Cursor()
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78 {
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79 ShowCursor(TRUE);
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80 }
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81
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82 void Window::Hide_Cursor()
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83 {
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84 ShowCursor(FALSE);
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85 }
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86
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87 HWND Window::Get_Handle()
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88 {
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89 return my_Handle;
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90 }
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91
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4742
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92 IMM & Window::Get_IMM()
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93 {
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94 return my_IMM;
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95 }
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96
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4741
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97 void Window::Register_Class()
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98 {
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99 WNDCLASSEXW Window_Class = {0};
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100 Window_Class.cbSize = sizeof(Window_Class);
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101 Window_Class.style = 0;
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102 Window_Class.lpfnWndProc = &Window::Window_Procedure;
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103 Window_Class.cbClsExtra = 0;
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104 Window_Class.cbWndExtra = 0;
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105 Window_Class.hInstance = GetModuleHandle(NULL);
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106 Window_Class.hIcon = NULL;
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107 Window_Class.hCursor = NULL;
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108 Window_Class.hbrBackground = NULL;
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109 Window_Class.lpszMenuName = NULL;
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110 Window_Class.lpszClassName = Window_Class_Name;
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111 Window_Class.hIconSm = NULL;
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112 if (0 == RegisterClassExW(&Window_Class))
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113 throw std::runtime_error("Failed to register window class");
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114
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115 my_Class_Registered = true;
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116 }
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117
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118 void Window::Unregister_Class()
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119 {
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120 if (my_Class_Registered)
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121 {
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122 if (0 == UnregisterClassW(Window_Class_Name, GetModuleHandle(NULL)))
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123 printf("Warning: Failed to unregister window class\n");
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124
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125 my_Class_Registered = false;
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126 }
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127 }
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128
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129 void Window::Create_Window(const std::wstring &Title, const Video_Mode &Mode, bool Fullscreen)
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130 {
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131 HDC Screen_DC = GetDC(NULL);
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132 int Left = (GetDeviceCaps(Screen_DC, HORZRES) - my_Video_Mode.Width) / 2;
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133 int Top = (GetDeviceCaps(Screen_DC, VERTRES) - my_Video_Mode.Height) / 2;
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134 int Width = my_Video_Mode.Width;
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135 int Height = my_Video_Mode.Height;
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136 ReleaseDC(NULL, Screen_DC);
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137
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138 DWORD Style = WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU;
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139 if (!my_Fullscreen)
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140 {
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141 RECT Rect = {0, 0, Width, Height};
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142 AdjustWindowRect(&Rect, Style, false);
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143 Width = Rect.right - Rect.left;
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144 Height = Rect.bottom - Rect.top;
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145 }
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146 my_Handle = CreateWindowW(Window_Class_Name, Title.c_str(), Style, Left, Top, Width, Height, NULL, NULL, GetModuleHandle(NULL), this);
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147 if (!my_Handle)
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148 throw std::runtime_error("Failed to create window");
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149
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150 if (Fullscreen)
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151 Switch_To_Fullscreen(Mode);
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152
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153 Create_Context(Mode);
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154
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155 RECT Rect = {0};
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156 GetClientRect(my_Handle, &Rect);
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157 //TODO: ...
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158 }
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159
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160 void Window::Destroy_Window()
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161 {
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162 Destroy_Context();
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163 if (my_Handle)
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164 {
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165 DestroyWindow(my_Handle);
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166 my_Handle = 0;
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167
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168 if (my_Fullscreen)
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169 ChangeDisplaySettings(NULL, 0);
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170 }
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171 }
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172
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173 void Window::Create_Context(const Video_Mode &Mode)
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174 {
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175 my_Device_Context = GetDC(my_Handle);
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176 if (!my_Device_Context)
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177 throw std::runtime_error("Failed to get device context");
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178
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179 PIXELFORMATDESCRIPTOR Pixel_Descriptor = {0};
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180 Pixel_Descriptor.nSize = sizeof(Pixel_Descriptor);
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181 Pixel_Descriptor.nVersion = 1;
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182 Pixel_Descriptor.iLayerType = PFD_MAIN_PLANE;
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183 Pixel_Descriptor.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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184 Pixel_Descriptor.iPixelType = PFD_TYPE_RGBA;
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185 Pixel_Descriptor.cColorBits = static_cast<BYTE>(Mode.Bits_Per_Pixel);
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186 Pixel_Descriptor.cDepthBits = 24;
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187 Pixel_Descriptor.cStencilBits = 8;
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188 Pixel_Descriptor.cAlphaBits = Mode.Bits_Per_Pixel == 32 ? 8 : 0;
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189
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190 int Best_Format = ChoosePixelFormat(my_Device_Context, &Pixel_Descriptor);
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191 if (0 == Best_Format)
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192 throw std::runtime_error("Failed to find suitable pixel format");
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193
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194 PIXELFORMATDESCRIPTOR Actual_Format = {0};
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195 Actual_Format.nSize = sizeof(Actual_Format);
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196 Actual_Format.nVersion = 1;
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197 DescribePixelFormat(my_Device_Context, Best_Format, sizeof(Actual_Format), &Actual_Format);
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198 if (!SetPixelFormat(my_Device_Context, Best_Format, &Actual_Format))
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199 throw std::runtime_error("Failed to set device pixel format");
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200
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201 my_GL_Context = wglCreateContext(my_Device_Context);
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202 if (!my_GL_Context)
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203 throw std::runtime_error("Failed to create OpenGL context");
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204
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205 wglMakeCurrent(my_Device_Context, my_GL_Context);
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206 }
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207
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208 void Window::Destroy_Context()
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209 {
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210 if (my_GL_Context)
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211 {
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212 wglDeleteContext(my_GL_Context);
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213 my_GL_Context = 0;
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214 }
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215 if (my_Device_Context)
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216 {
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217 ReleaseDC(my_Handle, my_Device_Context);
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218 my_Device_Context = 0;
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219 }
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220 }
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221
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222 void Window::Switch_To_Fullscreen(const Video_Mode &Mode)
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223 {
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224 DEVMODE Device_Mode = {0};
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225 Device_Mode.dmSize = sizeof(Device_Mode);
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226 Device_Mode.dmPelsWidth = Mode.Width;
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227 Device_Mode.dmPelsHeight = Mode.Height;
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228 Device_Mode.dmBitsPerPel = Mode.Bits_Per_Pixel;
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229 Device_Mode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;
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230
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231 if (DISP_CHANGE_SUCCESSFUL != ChangeDisplaySettings(&Device_Mode, CDS_FULLSCREEN))
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232 throw std::runtime_error("Failed to change to fullscreen mode");
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233
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234 SetWindowLong(my_Handle, GWL_STYLE, WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
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235 SetWindowLong(my_Handle, GWL_EXSTYLE, WS_EX_APPWINDOW);
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236
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237 SetWindowPos(my_Handle, HWND_TOP, 0, 0, Mode.Width, Mode.Height, SWP_FRAMECHANGED);
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238 }
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239
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240 LRESULT CALLBACK Window::Window_Procedure(HWND Handle, UINT Message, WPARAM wParam, LPARAM lParam)
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241 {
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242 switch (Message)
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243 {
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244 case WM_CREATE:
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245 {
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246 LONG This = reinterpret_cast<LONG>(reinterpret_cast<CREATESTRUCT *>(lParam)->lpCreateParams);
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247 SetWindowLongPtr(Handle, GWLP_USERDATA, This);
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248 return 0;
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249 }
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250 break;
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251 case WM_DESTROY:
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252 PostQuitMessage(0);
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253 return 0;
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254 break;
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255 default:
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256 {
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257 Window* Win = reinterpret_cast<Window *>(GetWindowLongPtr(Handle, GWLP_USERDATA));
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258 if (Win)
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259 return Win->Handle_Message(Handle, Message, wParam, lParam);
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260 }
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261 break;
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262 }
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263 return DefWindowProcW(Handle, Message, wParam, lParam);
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264 }
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265
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266 #define Call_Listener(x)\
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267 if (my_Listener) my_Listener->x
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268
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269 LRESULT Window::Handle_Message(HWND Handle, UINT Message, WPARAM wParam, LPARAM lParam)
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270 {
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271 bool IMM_Message = false;
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272 LRESULT Result = my_IMM.Handle_Message(Handle, Message, wParam, lParam, IMM_Message);
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273 if (IMM_Message)
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274 return Result;
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275
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276 switch (Message)
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277 {
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278 case WM_SIZE:
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279 Call_Listener(On_Resized(LOWORD(lParam), HIWORD(lParam)));
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280 break;
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281 case WM_CLOSE:
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282 Call_Listener(On_Close());
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283 break;
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284 case WM_KEYDOWN:
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285 Call_Listener(On_Key_Down(wParam));
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286 break;
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287 case WM_KEYUP:
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288 Call_Listener(On_Key_Up(wParam));
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289 break;
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290 case WM_CHAR:
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291 Call_Listener(On_Char(wParam));
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292 break;
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4742
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293 case WM_SETFOCUS:
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294 my_IMM.Focus_Gained();
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295 break;
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296 case WM_KILLFOCUS:
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297 my_IMM.Focus_Lost();
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298 break;
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4741
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299 default:
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300 return DefWindowProcW(Handle, Message, wParam, lParam);
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301 break;
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302 }
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303 return 0;
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304 }
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