Mercurial > projects > doodle
annotate standard_tools.d @ 18:df8d81d9f499
Lasso fiddling
| author | David Bryant <daveb@acres.com.au> |
|---|---|
| date | Mon, 13 Jul 2009 17:08:32 +0930 |
| parents | c643c04e3f5e |
| children | 22abbf4cde96 |
| rev | line source |
|---|---|
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* Switched over to geometry done with structs instead of classes.
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parents:
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changeset
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1 module standard_tools; |
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2 |
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* Fix up public/private includes
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3 public { |
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4 import tool; |
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5 } |
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parents:
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6 |
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7 private { |
| 18 | 8 import cairo_support; |
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9 import std.math; |
| 17 | 10 import std.stdio; |
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11 } |
| 7 | 12 |
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d6f44347373d
* Switched over to geometry done with structs instead of classes.
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parents:
diff
changeset
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13 final class PanTool : Tool { |
| 17 | 14 override bool handle_button_press(Viewport viewport, in ButtonEvent event) { |
| 7 | 15 if (event.button_name == ButtonName.MIDDLE) { |
| 17 | 16 mLastPosition = event.pixel_point; |
| 7 | 17 return true; |
| 18 } | |
| 19 else { | |
| 20 return false; | |
| 21 } | |
| 22 } | |
| 23 | |
| 17 | 24 override bool handle_motion(Viewport viewport, in MotionEvent event) { |
| 13 | 25 if (event.mask.is_set(Modifier.MIDDLE_BUTTON)) { |
| 17 | 26 viewport.rel_pan(mLastPosition - event.pixel_point); |
| 27 mLastPosition = event.pixel_point; | |
| 8 | 28 |
| 29 return true; | |
| 30 } | |
| 31 else { | |
| 32 return false; | |
| 33 } | |
| 7 | 34 } |
| 35 | |
| 17 | 36 override bool handle_scroll(Viewport viewport, in ScrollEvent event) { |
| 13 | 37 if (event.mask.is_unset(Modifier.MIDDLE_BUTTON)) { |
| 9 | 38 Vector delta; |
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* Switched over to geometry done with structs instead of classes.
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parents:
diff
changeset
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39 |
| 8 | 40 switch (event.scroll_direction) { |
| 41 case ScrollDirection.UP: | |
| 14 | 42 delta = event.mask.is_set(Modifier.SHIFT) ? Vector(AMOUNT, 0.0) : Vector(0.0, AMOUNT); |
| 8 | 43 break; |
| 44 case ScrollDirection.DOWN: | |
| 14 | 45 delta = event.mask.is_set(Modifier.SHIFT) ? Vector(-AMOUNT, 0.0) : Vector(0.0, -AMOUNT); |
| 8 | 46 break; |
| 47 case ScrollDirection.LEFT: | |
| 9 | 48 delta = Vector(-AMOUNT, 0.0); |
| 8 | 49 break; |
| 50 case ScrollDirection.RIGHT: | |
| 9 | 51 delta = Vector(AMOUNT, 0.0); |
| 8 | 52 break; |
| 53 } | |
| 54 | |
| 10 | 55 viewport.rel_pan(delta); |
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* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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56 } |
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David Bryant <daveb@acres.com.au>
parents:
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changeset
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57 |
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58 return true; |
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David Bryant <daveb@acres.com.au>
parents:
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changeset
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59 } |
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parents:
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60 |
| 8 | 61 private { |
| 62 Point mLastPosition; | |
| 9 | 63 static invariant double AMOUNT = 60.0; |
| 8 | 64 } |
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* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
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65 } |
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* Switched over to geometry done with structs instead of classes.
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parents:
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changeset
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66 |
| 7 | 67 final class ZoomTool : Tool { |
| 17 | 68 override bool handle_scroll(Viewport viewport, in ScrollEvent event) { |
| 7 | 69 if (event.mask.is_set(Modifier.CONTROL)) { |
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* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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70 if (event.scroll_direction == ScrollDirection.DOWN) { |
| 17 | 71 viewport.rel_zoom(event.pixel_point, 1.0 / ZOOM); |
| 9 | 72 return true; |
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d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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73 } |
| 9 | 74 else if (event.scroll_direction == ScrollDirection.UP) { |
| 17 | 75 viewport.rel_zoom(event.pixel_point, ZOOM); |
| 9 | 76 return true; |
| 77 } | |
| 78 else { | |
| 79 return false; | |
| 80 } | |
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2
d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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81 } |
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d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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82 else { |
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d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
|
83 return false; |
|
d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
|
84 } |
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d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
|
85 } |
| 7 | 86 |
| 9 | 87 private { |
| 88 static invariant double ZOOM = sqrt(2.0); | |
| 89 } | |
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2
d6f44347373d
* Switched over to geometry done with structs instead of classes.
David Bryant <daveb@acres.com.au>
parents:
diff
changeset
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90 } |
| 17 | 91 |
| 92 final class LassoTool : Tool { | |
| 93 override bool handle_button_press(Viewport viewport, in ButtonEvent event) { | |
| 94 if (event.button_name == ButtonName.LEFT) { | |
| 95 writefln("Start lasso"); | |
| 96 mActive = true; | |
| 18 | 97 mAnchorPoint = mCurrentPoint = event.pixel_point; |
| 17 | 98 return true; |
| 99 } | |
| 100 else { | |
| 101 return false; | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 override bool handle_button_release(Viewport viewport, in ButtonEvent event) { | |
| 106 if (event.button_name == ButtonName.LEFT && mActive) { | |
| 107 writefln("End lasso"); | |
| 108 mActive = false; | |
| 18 | 109 viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint)); |
| 17 | 110 return true; |
| 111 } | |
| 112 else { | |
| 113 return false; | |
| 114 } | |
| 115 } | |
| 116 | |
| 18 | 117 // FIXME account for the line width... |
| 118 | |
| 17 | 119 override bool handle_motion(Viewport viewport, in MotionEvent event) { |
| 120 if (mActive) { | |
| 18 | 121 viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint)); |
| 122 mCurrentPoint = event.pixel_point; | |
| 123 viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint)); | |
| 17 | 124 } |
| 125 | |
| 126 return false; | |
| 127 } | |
| 128 | |
| 18 | 129 override void draw(const Viewport viewport, in Rectangle damage, Context model_cr, Context pixel_cr) const { |
| 130 if (mActive) { | |
| 131 pixel_cr.save; { | |
| 132 pixel_cr.setSourceRgba(1.0, 0.0, 0.0, 1.0); | |
| 133 //writefln("Drawing rectangle: %s", Rectangle(mCurrentPoint, mAnchorPoint)); | |
| 134 rectangle(pixel_cr, Rectangle(mCurrentPoint, mAnchorPoint)); | |
| 135 pixel_cr.stroke; | |
| 136 } pixel_cr.restore; | |
| 137 } | |
| 17 | 138 } |
| 139 | |
| 140 private { | |
| 141 bool mActive; | |
| 18 | 142 Point mCurrentPoint; |
| 17 | 143 Point mAnchorPoint; // Pixel |
| 144 } | |
| 145 } |