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annotate doodle/fig/select_tool.d @ 79:535bae7a7305

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Checkpoint
author "David Bryant <bagnose@gmail.com>"
date Sun, 15 Aug 2010 23:18:05 +0930
parents 15ca7d5cd1ed
children b759414d2b72
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1 module doodle.fig.select_tool;
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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.tk.cairo;
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9 }
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10
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11 final class SelectTool : Tool {
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12 this() {
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13 super("Select");
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14 }
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15
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16 override bool handleButtonPress(scope IViewport viewport, in ButtonEvent event) {
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17 if (event.buttonName == ButtonName.LEFT) {
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18 _active = true;
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19 _anchorPoint = _currentPoint = event.pixelPoint;
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20 viewport.setCursor(Cursor.HAND);
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21 return true;
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22 }
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23 else {
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24 return false;
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25 }
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26 }
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27
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28 override bool handleButtonRelease(scope IViewport viewport, in ButtonEvent event) {
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29 if (event.buttonName == ButtonName.LEFT && _active) {
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30 _active = false;
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31 viewport.damageScreen(growCentre(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH));
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32 viewport.setCursor(Cursor.DEFAULT);
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33 return true;
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34 }
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35 else {
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36 return false;
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37 }
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38 }
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39
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40 override bool handleMotion(scope IViewport viewport, in MotionEvent event) {
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41 if (_active) {
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42 viewport.damageScreen(growCentre(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH));
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43 _currentPoint = event.pixelPoint;
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44 viewport.damageScreen(growCentre(Rectangle(_anchorPoint, _currentPoint), LINE_WIDTH));
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45 }
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46
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47 return false;
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48 }
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49
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50 override void draw(in Rectangle pixelDamage, scope Context pixelCr) const {
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51 if (_active) {
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52 /*
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53 pixelCr.save; {
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54 pixelCr.setSourceRgba(0.0, 0.0, 0.8, 0.3);
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55 rectangle(pixelCr, Rectangle(_currentPoint, _anchorPoint));
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56 pixelCr.fill();
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57 } pixelCr.restore();
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58 */
63
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59
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60 pixelCr.save(); {
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61 double[] dashes = [ 4.0, 4.0 ];
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62 pixelCr.setDash(dashes, 0.0);
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63 pixelCr.setSourceRgba(0.0, 0.0, 0.5, 1.0);
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64 pixelCr.setLineWidth(LINE_WIDTH);
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65 rectangle(pixelCr, Rectangle(_currentPoint, _anchorPoint));
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66 pixelCr.stroke;
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67 } pixelCr.restore;
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68 }
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69 }
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71 private {
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72 bool _active;
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73 Point _currentPoint;
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74 Point _anchorPoint; // Pixel
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75 static immutable double LINE_WIDTH = 1.0;
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76 }
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77 }