Mercurial > projects > doodle
annotate doodle/dia/standard_tools.d @ 58:c63719604adb
Beginnings of creating a rectangle...
| author | "David Bryant <bagnose@gmail.com>" |
|---|---|
| date | Mon, 09 Aug 2010 21:43:24 +0930 |
| parents | 9960c4fbd0dd |
| children | 20d6327c4a75 |
| rev | line source |
|---|---|
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1754cb773d41
Part-way through getting to compile with configure/builder.
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1 module doodle.dia.standard_tools; |
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2 |
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3 public { |
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4 import doodle.dia.tool; |
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5 } |
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6 |
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7 private { |
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8 import doodle.cairo.routines; |
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9 import std.math; |
| 17 | 10 import std.stdio; |
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11 } |
| 7 | 12 |
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13 final class PanTool : Tool { |
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14 this() { |
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15 super("Pan"); |
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16 } |
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17 |
| 57 | 18 override bool handleButtonPress(scope IViewport viewport, in ButtonEvent event) { |
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19 if (event.buttonName == ButtonName.MIDDLE) { |
| 48 | 20 mLastPosition = event.pixelPoint; |
| 7 | 21 return true; |
| 22 } | |
| 23 else { | |
| 24 return false; | |
| 25 } | |
| 26 } | |
| 27 | |
| 57 | 28 override bool handleMotion(scope IViewport viewport, in MotionEvent event) { |
| 48 | 29 if (event.mask.isSet(Modifier.MIDDLE_BUTTON)) { |
| 30 viewport.panRelative(mLastPosition - event.pixelPoint); | |
| 31 mLastPosition = event.pixelPoint; | |
| 8 | 32 |
| 33 return true; | |
| 34 } | |
| 35 else { | |
| 36 return false; | |
| 37 } | |
| 7 | 38 } |
| 39 | |
| 57 | 40 override bool handleScroll(scope IViewport viewport, in ScrollEvent event) { |
| 48 | 41 if (event.mask.isUnset(Modifier.MIDDLE_BUTTON)) { |
| 9 | 42 Vector delta; |
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43 |
| 48 | 44 switch (event.scrollDirection) { |
| 8 | 45 case ScrollDirection.UP: |
| 48 | 46 delta = event.mask.isSet(Modifier.SHIFT) ? Vector(-AMOUNT, 0.0) : Vector(0.0, AMOUNT); |
| 8 | 47 break; |
| 48 case ScrollDirection.DOWN: | |
| 48 | 49 delta = event.mask.isSet(Modifier.SHIFT) ? Vector(AMOUNT, 0.0) : Vector(0.0, -AMOUNT); |
| 8 | 50 break; |
| 51 case ScrollDirection.LEFT: | |
| 9 | 52 delta = Vector(-AMOUNT, 0.0); |
| 8 | 53 break; |
| 54 case ScrollDirection.RIGHT: | |
| 9 | 55 delta = Vector(AMOUNT, 0.0); |
| 8 | 56 break; |
| 40 | 57 default: |
| 58 assert(0); | |
| 8 | 59 } |
| 60 | |
| 48 | 61 viewport.panRelative(delta); |
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62 } |
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63 |
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64 return true; |
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65 } |
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66 |
| 8 | 67 private { |
| 68 Point mLastPosition; | |
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69 static immutable double AMOUNT = 60.0; |
| 8 | 70 } |
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71 } |
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72 |
| 7 | 73 final class ZoomTool : Tool { |
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74 this() { |
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75 super("Zoom"); |
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76 } |
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77 |
| 57 | 78 override bool handleScroll(scope IViewport viewport, in ScrollEvent event) { |
| 48 | 79 if (event.mask.isSet(Modifier.CONTROL)) { |
| 80 if (event.scrollDirection == ScrollDirection.DOWN) { | |
| 81 viewport.zoomRelative(event.pixelPoint, 1.0 / ZOOM); | |
| 9 | 82 return true; |
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83 } |
| 48 | 84 else if (event.scrollDirection == ScrollDirection.UP) { |
| 85 viewport.zoomRelative(event.pixelPoint, ZOOM); | |
| 9 | 86 return true; |
| 87 } | |
| 88 else { | |
| 89 return false; | |
| 90 } | |
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91 } |
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92 else { |
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93 return false; |
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parents:
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94 } |
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95 } |
| 7 | 96 |
| 9 | 97 private { |
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98 static immutable double ZOOM = sqrt(2.0); |
| 9 | 99 } |
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100 } |
| 17 | 101 |
| 56 | 102 final class SelectTool : Tool { |
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103 this() { |
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104 super("Select"); |
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105 } |
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106 |
| 57 | 107 override bool handleButtonPress(scope IViewport viewport, in ButtonEvent event) { |
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108 if (event.buttonName == ButtonName.LEFT) { |
| 48 | 109 _active = true; |
| 110 _anchorPoint = _currentPoint = event.pixelPoint; | |
| 111 viewport.setCursor(Cursor.HAND); | |
| 17 | 112 return true; |
| 113 } | |
| 114 else { | |
| 115 return false; | |
| 116 } | |
| 117 } | |
| 118 | |
| 57 | 119 override bool handleButtonRelease(scope IViewport viewport, in ButtonEvent event) { |
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120 if (event.buttonName == ButtonName.LEFT && _active) { |
| 48 | 121 _active = false; |
| 122 viewport.damagePixel(feather(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH / 2.0)); | |
| 123 viewport.setCursor(Cursor.DEFAULT); | |
| 17 | 124 return true; |
| 125 } | |
| 126 else { | |
| 127 return false; | |
| 128 } | |
| 129 } | |
| 130 | |
| 57 | 131 override bool handleMotion(scope IViewport viewport, in MotionEvent event) { |
| 48 | 132 if (_active) { |
| 133 viewport.damagePixel(feather(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH / 2.0)); | |
| 134 _currentPoint = event.pixelPoint; | |
| 135 viewport.damagePixel(feather(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH / 2.0)); | |
| 17 | 136 } |
| 137 | |
| 138 return false; | |
| 139 } | |
| 140 | |
| 57 | 141 override void draw(in IViewport viewport, |
| 56 | 142 in Rectangle pixelDamage, scope Context pixelCr) const { |
| 48 | 143 if (_active) { |
| 56 | 144 /* |
| 48 | 145 pixelCr.save; { |
| 146 pixelCr.setSourceRgba(0.0, 0.0, 0.8, 0.3); | |
| 147 rectangle(pixelCr, Rectangle(_currentPoint, _anchorPoint)); | |
| 148 pixelCr.fill(); | |
| 149 } pixelCr.restore(); | |
| 56 | 150 */ |
| 26 | 151 |
| 48 | 152 pixelCr.save(); { |
| 56 | 153 double[] dashes = [ 4.0, 4.0 ]; |
| 154 pixelCr.setDash(dashes, 0.0); | |
| 48 | 155 pixelCr.setSourceRgba(0.0, 0.0, 0.5, 1.0); |
| 156 pixelCr.setLineWidth(LINE_WIDTH); | |
| 157 rectangle(pixelCr, Rectangle(_currentPoint, _anchorPoint)); | |
| 158 pixelCr.stroke; | |
| 159 } pixelCr.restore; | |
| 18 | 160 } |
| 17 | 161 } |
| 162 | |
| 163 private { | |
| 48 | 164 bool _active; |
| 165 Point _currentPoint; | |
| 166 Point _anchorPoint; // Pixel | |
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167 static immutable double LINE_WIDTH = 1.0; |
| 17 | 168 } |
| 169 } |