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Some minor WIP stuff in UI module
author Michael Pavone <pavone@retrodev.com>
date Sat, 15 Aug 2015 22:45:24 -0700
parents b8f721bde066
children
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1 {
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2 _visibleWindows <- []
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3 _needsInit <- true
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4 _initRes <- 0
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5 _checkInitSDL <- {
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6 if: _needsInit {
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7 _initRes <- (sdl init: ((sdl subsystems) video)) = 0
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8 _needsInit <- true
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9 }
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10 _initRes
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11 }
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12
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13 _applyProps <- :base properties {
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14 foreach: (object propertiesOf: base) :_ name {
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15 if: (object does: properties understand?: name) {
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16 object setProperty: name on: base to: (object sendMessage: name to: properties)
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17 }
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18 }
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19 base
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20 }
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21 _ft <- option none
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22 _getFT <- {
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23 _ft value: :ft { ft } none: {
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24 ft <- freetype init
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25 _ft <- option value: ft
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26 ft
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27 }
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28 }
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29
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30 //TODO: Fix this for multi window
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31 _atlasDict <- dict hash
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32 _currentTex <- option none
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33 _texX <- 0
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34 _texY <- 0
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35 _texRowHeight <- 0
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36 _getFontAtlas <- :path _size renderer {
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37 sizes <- _atlasDict get: path else: {
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38 new <- dict hash
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39 _atlasDict set: path new
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40 new
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41 }
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42 _getTexture <- :width height {
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43 _currentTex value: {
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44 if: _texX + width > 2048 {
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45 _texY <- _texY + _texRowHeight
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46 _texRowHeight <- 0
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47 _texX <- 0
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48 }
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49 if: _texY + height > 2048 {
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50 _currentTex <- renderer createTexture: ((sdl pixelFormats) bgra8888) access: ((sdl textureAccess) streaming) width: 2048 height: 2048
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51 _currentTex value: :tex {
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52 tex blendMode!: ((sdl blendModes) blend)
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53 } none: {}
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54 _texX <- 0
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55 _texY <- 0
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56 _texRowHeight <- 0
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57 }
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58 if: _texRowHeight < height {
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59 _texRowHeight <- height
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60 }
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61 } none: {
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62 _currentTex <- renderer createTexture: ((sdl pixelFormats) bgra8888) access: ((sdl textureAccess) streaming) width: 2048 height: 2048
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63 _currentTex value: :tex {
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64 tex blendMode!: ((sdl blendModes) blend)
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65 } none: {}
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66 }
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67 _currentTex
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68 }
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69 atlas <- sizes get: _size else: {
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70 //TODO: Only load face once for all sizes
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71 a <- ((_getFT: ) faceFromPath: path index: 0) value: :_face {
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72 _textures <- #[]
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73
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74 _charmap <- _face charmap
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75 //TODO: Feed in window system DPI or at least make this configurable
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76 dpi <- 96
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77 _face setCharSize: _size res: dpi
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78 _pixelFactor <- ((_face unitsPerEm) f64) * 72.0 / (_size * (dpi f64))
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79 _emUnits <- _face unitsPerEm
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80 _glyphs <- dict hash
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81 _getGlyph <- :codePoint face {
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82 _glyphs get: codePoint else: {
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83 flags <- freetype loadFlags
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84 _charmap ifget: codePoint :_glyphIndex {
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85 slot <- face glyphSlot
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86 face loadGlyph: _glyphIndex flags: ((flags render) or (flags linearDesign) or (flags noHinting))
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87 w <- slot bitmapWidth
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88 h <- slot bitmapRows
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89 _advX <- slot linearHoriAdvance
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90 _advY <- slot linearVertAdvance
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91 _texture <- _getTexture: w h
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92 _rect <- sdl rect: _texX _texY size: w h
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93 _texture value: :tex {
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94 srcPitch <- slot bitmapPitch
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95 srcBuffer <- slot bitmapData
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96 tex lockRect: (sdl rect: _texX _texY size: w h ) with: :dstBuffer dstPitch {
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97 srcY <- 0
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98 dstY <- 0
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99 while: { srcY < h } do: {
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100 srcX <- 0
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101 srcIdx <- srcY * srcPitch
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102 dstIdx <- dstY * dstPitch
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103 while: { srcX < w } do: {
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104 //Set destination pixel to white with the source pixel as alpha
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105 //This allows text color to be set using colorMod! on the texture
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106 dstBuffer set: dstIdx (srcBuffer get: srcIdx)
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107 dstBuffer set: (dstIdx + 1) 255u8
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108 dstBuffer set: (dstIdx + 2) 255u8
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109 dstBuffer set: (dstIdx + 3) 255u8
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110
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111 srcX <- srcX + 1
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112 srcIdx <- srcIdx + 1
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113 dstIdx <- dstIdx + 4
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114 }
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115
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116 srcY <- srcY + 1
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117 dstY <- dstY + 1
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118 }
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119 }
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120 } none: {}
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121 _texX <- _texX + w
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122 _leftOff <- slot bitmapLeft
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123 _topOff <- slot bitmapTop
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124 g <- #{
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125 advanceX <- { _advX }
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126 advanceY <- { _advY }
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127 atlasRect <- { _rect }
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128
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129 glyphIndex <- { _glyphIndex }
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130 drawAt:color <- :x y :color {
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131 _texture value: :tex {
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132 tex colorMod!: color
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133 tex copyRect: _rect To: (sdl rect: x+_leftOff y-_topOff size: (_rect w) (_rect h))
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134 } none: {}
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135 }
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136 }
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137 _glyphs set: codePoint g
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138 g
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139 } else: {
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140 //get fallback
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141 _getGlyph: 0u32 face
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142 }
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143 }
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144 }
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145
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146 _getGlyphs <- :str face {
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147 i <- 0
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148 lines <- #[]
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149 curline <- #[]
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150 nl <- ("\n" byte: 0) uint32
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151 while: { i < (str byte_length) } do: {
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152 //TODO: Unicode
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153 codePoint <- (str byte: i) uint32
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154 if: codePoint = nl {
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155 lines append: curline
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156 curline <- #[]
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157 } else: {
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158 glyph <- _getGlyph: codePoint face
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159 curline append: glyph
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160 }
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161 i <- i + 1
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162 }
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163 lines append: curline
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164 lines
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165 }
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166 _iterateGlyphs:leading:using <- :str :leading :fun {
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167 lines <- _getGlyphs: str _face
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168 y <- 0.0
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169 maxX <- 0.0
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170 print: "Leading: " . leading . ", EM units: " . _emUnits . "\n"
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171 leading <- leading * (_emUnits f64) / _size
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172 foreach: lines :_ glyphs {
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173 x <- 0.0
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174 baseline <- y + (_emUnits f64)
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175 foreach: glyphs :_ glyph {
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176 fun: glyph x baseline
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177 x <- x + ((glyph advanceX) f64)
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178 //baseline <- baseline + ((glyph advanceY) f64)
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179 //TODO: kerning
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180 }
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181 y <- y + leading
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182 if: x > maxX {
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183 maxX <- x
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184 }
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185 }
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186 //convert font units into pixels
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187 x <- (maxX / _pixelFactor + 0.5) truncInt32
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188 y <- (y / _pixelFactor + 0.5) truncInt32
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189 vec x: x y: y
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190 }
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191 option value: #{
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192 stringSize:leading <- :str :leading {
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193 _iterateGlyphs: str leading: leading using: :glyph x y {}
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194 }
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195
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196 drawString:at:color:leading <- :str :xpos ypos :color :lead {
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197 _iterateGlyphs: str leading: lead using: :glyph x y {
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198 x <- ((x / _pixelFactor + 0.5) truncInt32) + xpos
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199 y <- ((y / _pixelFactor + 0.5) truncInt32) + ypos
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200 glyph drawAt: x y color: color
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201 }
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202 }
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203 }
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204 } none: {
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205 option none
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206 }
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207 sizes set: _size a
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208 a
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209 }
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210 }
332
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211 #{
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212 import: [
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213 r:g:b
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214 r:g:b:a
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215 ] from: sdl
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216 _styles <- []
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217 window <- :properties {
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218 _wind <- option none
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219 _renderer <- option none
337
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220
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221
332
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222 base <- #{
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223 title <- "Window"
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224 width <- 640
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225 height <- 480
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226 x <- 0
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227 y <- 0
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228 color <- (ui r: 255u8 g: 255u8 b: 255u8)
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229 children <- #[]
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230
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231 show <- {
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232 if: (_checkInitSDL: ) {
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233 _wind <- sdl createWindow: title pos: x y size: width height flags: 0u32
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234 _wind value: :window {
376
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235 _visibleWindows <- self | _visibleWindows
332
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236 _renderer <- window createRenderer: -1 flags: ((window renderOpts) accelerated)
335
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237 layout:
332
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238 draw:
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239 } none: {
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240 false
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241 }
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242 }
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243 }
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244
335
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245 layout <- {
337
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246 _renderer value: :renderer {
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247 yPos <- 0
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248 xPos <- 0
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249 rowMaxHeight <- 0
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250 foreach: children :_ child {
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251 softMax <- (width - xPos)
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252 child softMaxWidth: softMax maxWidth: width maxHeight: (height - yPos) renderer: renderer
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253 if: (child width) > softMax {
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254 yPos <- yPos + rowMaxHeight
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255 xPos <- 0
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256 rowMaxHeight <- 0
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257 }
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258 child x!: xPos
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259 child y!: yPos
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260 xPos <- xPos + (child width)
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261 if: (child height) > rowMaxHeight {
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262 rowMaxHeight <- (child height)
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263 }
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264 if: xPos >= width {
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265 yPos <- yPos + rowMaxHeight
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266 xPos <- 0
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267 rowMaxHeight <- 0
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268 }
335
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269 }
337
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270 } none: {}
335
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271 }
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272
332
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273 draw <- {
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274 print: "Draw!\n"
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275 _renderer value: :renderer {
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276 print: "Rendering!\n"
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277 renderer drawColor!: color
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278 renderer clear
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279
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280 foreach: children :_ child {
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281 child draw: renderer
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282 }
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283 renderer present
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284 true
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285 } none: { false }
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286 }
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287
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288 styles <- { _styles }
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289
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290 styles! <- :newstyles{
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291 //TODO: apply styles
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292 _styles <- newstyles
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293 }
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294 }
335
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295 _applyProps: base properties
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296 }
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297
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298 text <- :properties {
337
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299 _fontSize <- 12.0
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300 _leading <- 15.0
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301 _explicitLeading <- false
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302 _applyProps: #{
335
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303 text <- ""
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304 //TODO: replace this with font family and style once fontconfig is hooked up
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305 font <- "/usr/share/fonts/truetype/droid/DroidSans.ttf"
337
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306 fontSize <- { _fontSize }
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diff changeset
307 fontSize! <- :newSize {
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308 _fontSize <- newSize
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diff changeset
309 if: (not: _explicitLeading) {
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diff changeset
310 _leading <- newSize * 1.25
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diff changeset
311 }
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diff changeset
312 }
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diff changeset
313 leading <- { _leading }
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diff changeset
314 leading! <- :newLeading {
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diff changeset
315 _explicitLeading <- true
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diff changeset
316 _leading <- newLeading
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317 }
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318 color <- (ui r: 0u8 g: 0u8 b: 0u8)
335
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319 width <- -1
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320 height <- -1
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321 x <- 0
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322 y <- 0
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diff changeset
323
337
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diff changeset
324 softMaxWidth:maxWidth:maxHeight:renderer <- :softMax :maxWidth :maxHeight :renderer {
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diff changeset
325 (_getFontAtlas: font fontSize renderer) value: :atlas {
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diff changeset
326 //TODO: word wrap
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diff changeset
327 bbox <- atlas stringSize: text leading: _leading
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diff changeset
328 width <- bbox x
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diff changeset
329 height <- bbox y
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diff changeset
330 print: "Text: " . text . " has size: " . width . ", " . height . "\n"
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diff changeset
331 } none: {
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parents: 335
diff changeset
332 }
335
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parents: 332
diff changeset
333 }
337
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Michael Pavone <pavone@retrodev.com>
parents: 335
diff changeset
334
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parents: 335
diff changeset
335 draw <- :renderer {
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diff changeset
336 (_getFontAtlas: font fontSize renderer) value: :atlas {
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parents: 335
diff changeset
337 print: "Drawing: " . text . " at " . x . ", " . y . "\n"
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diff changeset
338 atlas drawString: text at: x y color: color leading: _leading
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diff changeset
339 } none: {
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diff changeset
340 }
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diff changeset
341 }
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diff changeset
342 } properties
335
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diff changeset
343 }
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diff changeset
344
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diff changeset
345 image <- :properties {
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diff changeset
346 _texture <- option none
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diff changeset
347 _applyProps: #{
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diff changeset
348 source <- ""
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diff changeset
349 width <- -1
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diff changeset
350 height <- -1
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diff changeset
351 x <- 0
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diff changeset
352 y <- 0
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diff changeset
353
337
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diff changeset
354 softMaxWidth:maxWidth:maxHeight:renderer <- :softMax :maxWidth :maxHeight :renderer {
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parents: 335
diff changeset
355 _texture value: :_ {
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parents: 335
diff changeset
356 } none: {
335
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parents: 332
diff changeset
357 (sdl loadBMP: source) value: :surface {
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parents: 332
diff changeset
358 (surface asTexture: renderer) value: :texture {
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parents: 332
diff changeset
359 _texture <- option value: texture
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parents: 332
diff changeset
360 width <- texture width
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parents: 332
diff changeset
361 height <- texture height
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parents: 332
diff changeset
362 if: (width > maxWidth) {
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Michael Pavone <pavone@retrodev.com>
parents: 332
diff changeset
363 width <- maxWidth
79a14e41b79a Add image element and placeholder text element to ui module
Michael Pavone <pavone@retrodev.com>
parents: 332
diff changeset
364 }
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parents: 332
diff changeset
365 if: (height > maxHeight) {
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parents: 332
diff changeset
366 height <- maxHeight
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diff changeset
367 }
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parents: 332
diff changeset
368 } none: {
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parents: 332
diff changeset
369 width <- 0
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diff changeset
370 height <- 0
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diff changeset
371 }
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diff changeset
372 } none: {
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diff changeset
373 print: "Failed to load " . source . "\n"
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parents: 332
diff changeset
374 //Should this have some kind of placeholder as a fallback?
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diff changeset
375 width <- 0
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diff changeset
376 height <- 0
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diff changeset
377 }
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parents: 332
diff changeset
378 }
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parents: 332
diff changeset
379 }
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parents: 332
diff changeset
380
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diff changeset
381 draw <- :_ {
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diff changeset
382 _texture value: :texture {
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diff changeset
383 print: "Rendering bitmap to " . x . ", " . y . ", size: " . width . ", " . height . "\n"
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parents: 332
diff changeset
384 texture copyTo: (sdl rect: x y size: width height)
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parents: 332
diff changeset
385 } none: {
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parents: 332
diff changeset
386 }
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parents: 332
diff changeset
387 }
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diff changeset
388 } properties
332
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parents:
diff changeset
389 }
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parents:
diff changeset
390
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parents:
diff changeset
391 enterEventLoop <- {
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parents:
diff changeset
392 continue? <- true
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parents:
diff changeset
393
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parents:
diff changeset
394 _handlers <- dict hash
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parents:
diff changeset
395 _handlers set: ((sdl eventTypes) quit) :event {
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parents:
diff changeset
396 continue? <- false
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parents:
diff changeset
397 }
ead24192ed45 Initial work on a UI module
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parents:
diff changeset
398 _handlers set: ((sdl eventTypes) window) :event {
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parents:
diff changeset
399 if: (event event) = ((sdl windowEventTypes) exposed) {
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
400 foreach: _visibleWindows :_ wind {
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parents:
diff changeset
401 print: "Redrawing window\n"
ead24192ed45 Initial work on a UI module
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parents:
diff changeset
402 wind draw
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
403 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
404 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
405 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
406 while: { continue? } do: {
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
407 (sdl waitEvent) value: :event {
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
408 _handlers ifget: (event type) :handler {
ead24192ed45 Initial work on a UI module
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parents:
diff changeset
409 handler: event
ead24192ed45 Initial work on a UI module
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parents:
diff changeset
410 } else: {
376
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
411
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
412 if: (event type) = ((sdl eventTypes) mouseMotion) {
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
413 print: "Window ID: " . (event windowID) . ", x: " . (event x) . ", y: " . (event y) . "\n"
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
414 } else: {
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
415 print: "Unhandled event type: " . (event type) . "\n"
d61b1f0e1936 Some minor WIP stuff in UI module
Michael Pavone <pavone@retrodev.com>
parents: 337
diff changeset
416 }
332
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
417 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
418 } none: {}
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
419 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
420 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
421 }
ead24192ed45 Initial work on a UI module
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
422 }