Mercurial > projects > doodle
annotate doodle/dia/grid_layer.d @ 92:a98116479793
Removed GL support. Improved grid.
| author | daveb |
|---|---|
| date | Fri, 20 Aug 2010 18:34:32 +0930 |
| parents | 42766e14534e |
| children | bc5baa585b32 |
| rev | line source |
|---|---|
|
28
1754cb773d41
Part-way through getting to compile with configure/builder.
Graham St Jack <graham.stjack@internode.on.net>
parents:
27
diff
changeset
|
1 module doodle.dia.grid_layer; |
|
16
9e63308b749c
* Fix up public/private includes
David Bryant <daveb@acres.com.au>
parents:
12
diff
changeset
|
2 |
| 24 | 3 public { |
|
28
1754cb773d41
Part-way through getting to compile with configure/builder.
Graham St Jack <graham.stjack@internode.on.net>
parents:
27
diff
changeset
|
4 import doodle.dia.icanvas; |
| 24 | 5 } |
| 6 | |
| 7 private { | |
| 8 import std.math; | |
| 89 | 9 import std.stdio; |
| 92 | 10 import std.array; |
| 11 | |
| 12 import doodle.core.logging; | |
| 24 | 13 } |
| 11 | 14 |
| 92 | 15 // Draw a grid. |
| 16 // zoom -> pixels / millimetre | |
| 17 // Grid lines must have a maximum density | |
| 18 // | |
| 11 | 19 |
| 57 | 20 class GridLayer : Layer, IGrid { |
|
58
c63719604adb
Beginnings of creating a rectangle...
"David Bryant <bagnose@gmail.com>"
parents:
57
diff
changeset
|
21 this(in string name = "Grid") { |
| 24 | 22 super(name); |
| 92 | 23 _spacingValid = false; |
| 24 | 24 } |
| 25 | |
| 35 | 26 // Layer overrides: |
| 27 | |
| 11 | 28 override Rectangle bounds() const { |
| 29 // We don't require any geometry | |
| 30 return Rectangle(); | |
| 31 } | |
| 32 | |
| 84 | 33 override void draw(in Rectangle screenDamage, scope Renderer screenRenderer, |
| 89 | 34 in Rectangle modelDamage, scope Renderer modelRenderer, |
| 35 in ScreenModel screenModel) const { | |
| 92 | 36 assert(_spacingValid); |
| 35 | 37 |
| 92 | 38 const z = screenModel.zoom; |
| 39 const lineWidthModel = LINE_WIDTH_SCREEN / z; | |
| 89 | 40 |
| 41 modelRenderer.pushState; { | |
| 92 | 42 modelRenderer.setColor(doodle.tk.color.Color(0.0, 0.0, 0.7, 1.0)); |
| 43 modelRenderer.setLineWidth(lineWidthModel); | |
|
90
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
44 |
| 92 | 45 auto x = roundDownSpacing(modelDamage.corner0.x); |
| 36 | 46 |
| 89 | 47 for (;;) { |
| 48 modelRenderer.drawVLine(x, modelDamage.corner0.y, modelDamage.corner1.y); | |
| 49 x += _spacing; | |
| 50 if (x > modelDamage.corner1.x) break; | |
| 51 } | |
|
90
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
52 |
| 92 | 53 auto y = roundDownSpacing(modelDamage.corner0.y); |
|
90
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
54 |
|
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
55 for (;;) { |
|
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
56 modelRenderer.drawHLine(y, modelDamage.corner0.x, modelDamage.corner1.x); |
|
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
57 y += _spacing; |
|
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
58 if (y > modelDamage.corner1.y) break; |
|
885914257e0e
Ok, the cairo resource leak (and cost of reqaquisition) in GtkD is the cause
David Bryant <bagnose@gmail.com>
parents:
89
diff
changeset
|
59 } |
| 89 | 60 } modelRenderer.popState; |
| 11 | 61 } |
| 62 | |
| 57 | 63 // IGrid overrides: |
| 35 | 64 |
| 92 | 65 override void zoomChanged(in double zoom) { |
| 66 foreach (s; SPACINGS) { | |
| 67 _spacing = s; | |
| 68 double pixels = zoom * _spacing; | |
| 69 if (pixels > MIN_SPACING) { break; } | |
| 70 } | |
| 71 _spacingValid = true; | |
| 35 | 72 } |
| 73 | |
| 11 | 74 private { |
| 92 | 75 double roundDownSpacing(in double value) const { |
| 76 return _spacing * floor(value / _spacing); | |
| 77 } | |
| 78 | |
| 79 bool _spacingValid; | |
| 80 double _spacing; // model spacing | |
| 35 | 81 |
| 92 | 82 immutable double LINE_WIDTH_SCREEN = 0.25; |
| 83 immutable double MIN_SPACING = 40.0; // pixels | |
| 84 immutable double[] SPACINGS = // millimetres | |
| 85 [ | |
| 86 5.0, | |
| 87 10.0, | |
| 88 20.0, | |
| 89 50.0 | |
| 90 ]; | |
| 11 | 91 } |
| 92 } |