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annotate semiconginev2/rendering/platform/linux.nim @ 1245:d594b1d07d49

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add: initial changes for glTF loader
author sam <sam@basx.dev>
date Wed, 24 Jul 2024 00:26:57 +0700
parents a3fa15c25026
children b0f4c8ccd49a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1224
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1 import ../../thirdparty/x11/xlib
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2 import ../../thirdparty/x11/xutil
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3 import ../../thirdparty/x11/keysym
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4 import ../../thirdparty/x11/x as x11
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5 import ../../thirdparty/x11/xkblib
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6
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7 const REQUIRED_PLATFORM_EXTENSIONS = @["VK_KHR_xlib_surface"]
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8
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9 # got values (keycodes) from xev
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10 const KeyTypeMap = {
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11 9: Escape, 67: F1, 68: F2, 69: F3, 70: F4, 71: F5, 72: F6, 73: F7, 74: F8,
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12 75: F9, 76: F10, 95: F11, 96: F12,
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13 49: NumberRowExtra1, 10: `1`, 11: `2`, 12: `3`, 13: `4`, 14: `5`, 15: `6`,
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14 16: `7`, 17: `8`, 18: `9`, 19: `0`, 20: NumberRowExtra2, 21: NumberRowExtra3,
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15 24: Q, 25: W, 26: E, 27: R, 28: T, 29: Y, 30: U, 31: I, 32: O, 33: P, 38: A,
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16 39: S, 40: D, 41: Key.F, 42: G, 43: H, 44: J, 45: K, 46: L, 52: Z, 53: X,
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17 54: C, 55: V, 56: B, 57: N, 58: M,
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18
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19 23: Tab, 66: CapsLock, 50: ShiftL, 62: ShiftR, 37: CtrlL, 105: CtrlR,
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20 133: SuperL, 134: SuperR,
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21 64: AltL, 108: AltR,
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22 65: Space, 36: Enter, 22: Backspace,
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23 34: LetterRow1Extra1, 35: LetterRow1Extra2,
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24 47: LetterRow2Extra1, 48: LetterRow2Extra2, 51: LetterRow2Extra3,
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25 59: LetterRow3Extra1, 60: LetterRow3Extra2, 61: LetterRow3Extra3,
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26 111: Up, 116: Down, 113: Left, 114: Right,
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27 112: PageUp, 117: PageDown, 110: Home, 115: End, 118: Insert, 119: Delete,
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28 107: PrintScreen, 78: ScrollLock, 127: Pause,
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29 }.toTable
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30
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31 const MouseButtonTypeMap = {
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32 x11.Button1: MouseButton.Mouse1,
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33 x11.Button2: MouseButton.Mouse2,
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34 x11.Button3: MouseButton.Mouse3,
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35 }.toTable
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36
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37 var deleteMessage*: Atom
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38
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39 type
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40 NativeWindow* = object
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41 display*: ptr xlib.Display
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42 window*: x11.Window
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43 emptyCursor: Cursor
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44
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45 template checkXlibResult(call: untyped) =
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46 let value = call
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47 if value == 0:
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48 raise newException(Exception, "Xlib error: " & astToStr(call) &
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49 " returned " & $value)
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50
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51 proc XErrorLogger(display: PDisplay, event: PXErrorEvent): cint {.cdecl.} =
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52 logging.error &"Xlib: {event[]}"
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53
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54 proc CreateWindow*(title: string): NativeWindow =
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55 checkXlibResult XInitThreads()
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56 let display = XOpenDisplay(nil)
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57 if display == nil:
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58 quit "Failed to open display"
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59 discard XSetErrorHandler(XErrorLogger)
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60
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61 let rootWindow = display.XDefaultRootWindow()
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62 discard display.XkbSetDetectableAutoRepeat(true, nil)
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63 var
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64 attribs: XWindowAttributes
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65 width = cuint(800)
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66 height = cuint(600)
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67 checkXlibResult display.XGetWindowAttributes(rootWindow, addr(attribs))
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68
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69 var attrs = XSetWindowAttributes()
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70 let window = XCreateWindow(
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71 display,
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72 rootWindow,
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73 (attribs.width - cint(width)) div 2, (attribs.height - cint(height)) div 2,
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74 width, height,
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75 0,
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76 CopyFromParent,
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77 InputOutput,
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78 cast[PVisual](CopyFromParent),
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79 0, # CWOverrideRedirect,
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80 addr attrs,
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81 # foregroundColor, backgroundColor
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82 )
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83 checkXlibResult XSetStandardProperties(display, window, title, "window", 0, nil, 0, nil)
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84 checkXlibResult XSelectInput(display, window, PointerMotionMask or ButtonPressMask or ButtonReleaseMask or KeyPressMask or KeyReleaseMask or ExposureMask)
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85 checkXlibResult XMapWindow(display, window)
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86
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87 deleteMessage = XInternAtom(display, "WM_DELETE_WINDOW", XBool(false))
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88 checkXlibResult XSetWMProtocols(display, window, addr(deleteMessage), 1)
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89
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90 var data = "\0".cstring
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91 var pixmap = display.XCreateBitmapFromData(window, data, 1, 1)
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92 var color: XColor
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93 var empty_cursor = display.XCreatePixmapCursor(pixmap, pixmap, addr(color), addr(color), 0, 0)
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94 checkXlibResult display.XFreePixmap(pixmap)
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95 return NativeWindow(display: display, window: window, emptyCursor: empty_cursor)
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96
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97 proc SetTitle*(window: NativeWindow, title: string) =
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98 checkXlibResult XSetStandardProperties(window.display, window.window, title, "window", 0, nil, 0, nil)
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99
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100 proc Fullscreen*(window: var NativeWindow, enable: bool) =
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101 var
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102 wm_state = window.display.XInternAtom("_NET_WM_STATE", 0)
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103 wm_fullscreen = window.display.XInternAtom("_NET_WM_STATE_FULLSCREEN", 0)
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104 var
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105 xev: XEvent
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106 xev.xclient = XClientMessageEvent(
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107 message_type: wm_state,
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108 format: 32,
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109 window: window.window,
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110 data: XClientMessageData(
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111 l: [
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112 int(not enable) xor 1,
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113 clong(wm_fullscreen),
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114 0,
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115 0,
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116 0
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117 ]
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118 )
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119 )
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120 xev.theType = ClientMessage
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121
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122 checkXlibResult window.display.XSendEvent(
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123 window.display.DefaultRootWindow(),
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124 0,
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125 SubstructureRedirectMask or SubstructureNotifyMask,
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126 addr xev
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127 )
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128 checkXlibResult window.display.XFlush()
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129
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130 proc HideSystemCursor*(window: NativeWindow) =
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131 checkXlibResult XDefineCursor(window.display, window.window, window.emptyCursor)
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132 checkXlibResult window.display.XFlush()
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133
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134 proc ShowSystemCursor*(window: NativeWindow) =
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135 checkXlibResult XUndefineCursor(window.display, window.window)
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136 checkXlibResult window.display.XFlush()
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137
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138 proc Destroy*(window: NativeWindow) =
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139 checkXlibResult window.display.XFreeCursor(window.emptyCursor)
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140 checkXlibResult window.display.XDestroyWindow(window.window)
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141 discard window.display.XCloseDisplay() # always returns 0
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142
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143 proc Size*(window: NativeWindow): (int, int) =
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144 var attribs: XWindowAttributes
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145 checkXlibResult XGetWindowAttributes(window.display, window.window, addr(attribs))
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146 return (int(attribs.width), int(attribs.height))
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147
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sam <sam@basx.dev>
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148 proc PendingEvents*(window: NativeWindow): seq[Event] =
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149 var event: XEvent
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150 while window.display.XPending() > 0:
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151 discard window.display.XNextEvent(addr(event))
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152 case event.theType
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153 of ClientMessage:
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154 if cast[Atom](event.xclient.data.l[0]) == deleteMessage:
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155 result.add(Event(eventType: Quit))
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156 of KeyPress:
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157 let keyevent = cast[PXKeyEvent](addr(event))
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158 let xkey = int(keyevent.keycode)
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159 result.add Event(eventType: KeyPressed, key: KeyTypeMap.getOrDefault(xkey, Key.UNKNOWN))
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160 of KeyRelease:
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sam <sam@basx.dev>
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161 let keyevent = cast[PXKeyEvent](addr(event))
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sam <sam@basx.dev>
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162 let xkey = int(keyevent.keycode)
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163 result.add Event(eventType: KeyReleased, key: KeyTypeMap.getOrDefault(xkey, Key.UNKNOWN))
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sam <sam@basx.dev>
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164 of ButtonPress:
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sam <sam@basx.dev>
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165 let button = int(cast[PXButtonEvent](addr(event)).button)
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sam <sam@basx.dev>
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166 if button == Button4:
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sam <sam@basx.dev>
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167 result.add Event(eventType: MouseWheel, amount: 1'f32)
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sam <sam@basx.dev>
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168 elif button == Button5:
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169 result.add Event(eventType: MouseWheel, amount: -1'f32)
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sam <sam@basx.dev>
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170 else:
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171 result.add Event(eventType: MousePressed, button: MouseButtonTypeMap.getOrDefault(button, MouseButton.UNKNOWN))
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sam <sam@basx.dev>
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172 of ButtonRelease:
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sam <sam@basx.dev>
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173 let button = int(cast[PXButtonEvent](addr(event)).button)
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sam <sam@basx.dev>
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174 result.add Event(eventType: MouseReleased, button: MouseButtonTypeMap.getOrDefault(button, MouseButton.UNKNOWN))
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sam <sam@basx.dev>
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175 of MotionNotify:
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sam <sam@basx.dev>
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176 let motion = cast[PXMotionEvent](addr(event))
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177 result.add Event(eventType: MouseMoved, x: motion.x, y: motion.y)
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178 of ConfigureNotify, Expose:
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179 result.add Event(eventType: ResizedWindow)
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180 else:
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sam <sam@basx.dev>
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181 discard
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182
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183
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sam <sam@basx.dev>
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184 proc GetMousePosition*(window: NativeWindow): Option[Vec2f] =
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185 var
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186 root: x11.Window
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187 win: x11.Window
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sam <sam@basx.dev>
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188 rootX: cint
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sam <sam@basx.dev>
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189 rootY: cint
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sam <sam@basx.dev>
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190 winX: cint
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sam <sam@basx.dev>
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191 winY: cint
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sam <sam@basx.dev>
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192 mask: cuint
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sam <sam@basx.dev>
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193 onscreen = XQueryPointer(
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194 window.display,
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sam <sam@basx.dev>
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195 window.window,
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sam <sam@basx.dev>
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196 addr(root),
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sam <sam@basx.dev>
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197 addr(win),
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sam <sam@basx.dev>
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198 addr(rootX),
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sam <sam@basx.dev>
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199 addr(rootY),
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sam <sam@basx.dev>
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200 addr(winX),
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sam <sam@basx.dev>
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201 addr(winY),
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sam <sam@basx.dev>
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202 addr(mask),
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sam <sam@basx.dev>
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203 )
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sam <sam@basx.dev>
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204 if onscreen != 0:
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sam <sam@basx.dev>
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205 result = some(Vec2f([float32(winX), float32(winY)]))
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206
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sam <sam@basx.dev>
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207
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sam <sam@basx.dev>
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208 proc CreateNativeSurface(instance: VkInstance, window: NativeWindow): VkSurfaceKHR =
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sam <sam@basx.dev>
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209 var surfaceCreateInfo = VkXlibSurfaceCreateInfoKHR(
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210 sType: VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR,
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211 dpy: cast[ptr Display](window.display),
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sam <sam@basx.dev>
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212 window: cast[Window](window.window),
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213 )
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214 checkVkResult vkCreateXlibSurfaceKHR(instance, addr(surfaceCreateInfo), nil, addr(result))