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Add image element and placeholder text element to ui module
author Michael Pavone <pavone@retrodev.com>
date Mon, 30 Mar 2015 19:12:51 -0700
parents ead24192ed45
children b8f721bde066
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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 #{
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22 import: [
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23 r:g:b
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24 r:g:b:a
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25 ] from: sdl
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26 _styles <- []
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27 window <- :properties {
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28 _wind <- option none
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29 _renderer <- option none
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30 base <- #{
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31 title <- "Window"
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32 width <- 640
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33 height <- 480
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34 x <- 0
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35 y <- 0
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36 color <- (ui r: 255u8 g: 255u8 b: 255u8)
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37 children <- #[]
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38
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39 show <- {
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40 if: (_checkInitSDL: ) {
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41 _wind <- sdl createWindow: title pos: x y size: width height flags: 0u32
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42 _wind value: :window {
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43 _renderer <- window createRenderer: -1 flags: ((window renderOpts) accelerated)
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44 layout:
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45 draw:
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46 } none: {
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47 false
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48 }
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49 }
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50 }
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51
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52 layout <- {
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53 yPos <- 0
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54 xPos <- 0
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55 rowMaxHeight <- 0
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56 foreach: children :_ child {
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57 softMax <- (width - xPos)
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58 child softMaxWidth: softMax maxWidth: width maxHeight: (height - yPos) renderer: _renderer
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59 if: (child width) > softMax {
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60 yPos <- yPos + rowMaxHeight
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61 xPos <- 0
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62 rowMaxHeight <- 0
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63 }
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64 child x!: xPos
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65 child y!: yPos
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66 xPos <- xPos + (child width)
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67 if: (child height) > rowMaxHeight {
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68 rowMaxHeight <- (child height)
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69 }
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70 if: xPos >= width {
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71 yPos <- yPos + rowMaxHeight
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72 xPos <- 0
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73 rowMaxHeight <- 0
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74 }
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75 }
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76 }
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77
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78 draw <- {
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79 print: "Draw!\n"
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80 _renderer value: :renderer {
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81 print: "Rendering!\n"
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82 renderer drawColor!: color
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83 renderer clear
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84
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85 foreach: children :_ child {
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86 child draw: renderer
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87 }
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88 renderer present
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89 true
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90 } none: { false }
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91 }
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92
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93 styles <- { _styles }
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94
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95 styles! <- :newstyles{
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96 //TODO: apply styles
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97 _styles <- newstyles
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98 }
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99 }
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100 _applyProps: base properties
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101 }
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102
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103 text <- :properties {
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104 #{
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105 text <- ""
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106 //TODO: replace this with font family and style once fontconfig is hooked up
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107 font <- "/usr/share/fonts/truetype/droid/DroidSans.ttf"
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108 fontSize <- 12.0
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109 width <- -1
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110 height <- -1
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111 x <- 0
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112 y <- 0
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113
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114 softMaxWidth:maxWidth:maxHeight <- :softMax :maxWidth :maxHeight {
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115
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116 }
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117 }
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118 }
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119
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120 image <- :properties {
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121 _texture <- option none
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122 _applyProps: #{
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123 source <- ""
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124 width <- -1
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125 height <- -1
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126 x <- 0
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127 y <- 0
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128
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129 softMaxWidth:maxWidth:maxHeight:renderer <- :softMax :maxWidth :maxHeight :_renderer {
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130 _renderer value: :renderer {
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131 (sdl loadBMP: source) value: :surface {
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132 (surface asTexture: renderer) value: :texture {
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133 _texture <- option value: texture
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134 width <- texture width
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135 height <- texture height
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136 if: (width > maxWidth) {
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137 width <- maxWidth
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138 }
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139 if: (height > maxHeight) {
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140 height <- maxHeight
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141 }
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142 } none: {
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143 width <- 0
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144 height <- 0
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145 }
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146 } none: {
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147 print: "Failed to load " . source . "\n"
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148 //Should this have some kind of placeholder as a fallback?
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149 width <- 0
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150 height <- 0
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151 }
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152 } none: {
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153 }
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154 }
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155
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156 draw <- :_ {
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157 _texture value: :texture {
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158 print: "Rendering bitmap to " . x . ", " . y . ", size: " . width . ", " . height . "\n"
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159 texture copyTo: (sdl rect: x y size: width height)
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160 } none: {
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161 }
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162 }
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163 } properties
332
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164 }
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165
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166 enterEventLoop <- {
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167 continue? <- true
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168
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169 _handlers <- dict hash
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170 _handlers set: ((sdl eventTypes) quit) :event {
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171 continue? <- false
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172 }
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173 _handlers set: ((sdl eventTypes) window) :event {
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174 if: (event event) = ((sdl windowEventTypes) exposed) {
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175 foreach: _visibleWindows :_ wind {
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176 print: "Redrawing window\n"
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177 wind draw
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178 }
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179 }
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180 }
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181 while: { continue? } do: {
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182 (sdl waitEvent) value: :event {
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183 _handlers ifget: (event type) :handler {
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184 handler: event
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185 } else: {
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186 print: "Unhandled event type: " . (event type) . "\n"
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187 }
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188 } none: {}
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189 }
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190 }
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191 }
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192 }