Fix some bugs in PlayfieldCanvasView.
Cat's Eye Technologies
11 years ago
| 39 | 39 | * Return the requested bounds of the occupied portion of the playfield. |
| 40 | 40 | * "Occupation" in this sense includes all cursors. |
| 41 | 41 | * |
| 42 | * These may return 'undefined' if there is nothing in the playfield. | |
| 43 | * | |
| 42 | 44 | * Override these if you want to draw some portion of the |
| 43 | 45 | * playfield which is not the whole playfield. |
| 44 | 46 | * (Not yet implemented) |
| 46 | 48 | this.getLowerX = function() { |
| 47 | 49 | var minX = this.pf.getMinX(); |
| 48 | 50 | for (var i = 0; i < this.cursors.length; i++) { |
| 49 | if (this.cursors[i].x < minX) minX = this.cursors[i].x; | |
| 51 | if (minX === undefined || this.cursors[i].x < minX) { | |
| 52 | minX = this.cursors[i].x; | |
| 53 | } | |
| 50 | 54 | } |
| 51 | 55 | return minX; |
| 52 | 56 | }; |
| 53 | 57 | this.getUpperX = function() { |
| 54 | 58 | var maxX = this.pf.getMaxX(); |
| 55 | 59 | for (var i = 0; i < this.cursors.length; i++) { |
| 56 | if (this.cursors[i].x > maxX) maxX = this.cursors[i].x; | |
| 60 | if (maxX === undefined || this.cursors[i].x > maxX) { | |
| 61 | maxX = this.cursors[i].x; | |
| 62 | } | |
| 57 | 63 | } |
| 58 | 64 | return maxX; |
| 59 | 65 | }; |
| 60 | 66 | this.getLowerY = function() { |
| 61 | 67 | var minY = this.pf.getMinY(); |
| 62 | 68 | for (var i = 0; i < this.cursors.length; i++) { |
| 63 | if (this.cursors[i].y < minY) minY = this.cursors[i].y; | |
| 69 | if (minY === undefined || this.cursors[i].y < minY) { | |
| 70 | minY = this.cursors[i].y; | |
| 71 | } | |
| 64 | 72 | } |
| 65 | 73 | return minY; |
| 66 | 74 | }; |
| 67 | 75 | this.getUpperY = function() { |
| 68 | 76 | var maxY = this.pf.getMaxY(); |
| 69 | 77 | for (var i = 0; i < this.cursors.length; i++) { |
| 70 | if (this.cursors[i].y > maxY) maxY = this.cursors[i].y; | |
| 78 | if (maxY === undefined || this.cursors[i].y > maxY) { | |
| 79 | maxY = this.cursors[i].y; | |
| 80 | } | |
| 71 | 81 | } |
| 72 | 82 | return maxY; |
| 73 | 83 | }; |
| 158 | 168 | ctx.textBaseline = "top"; |
| 159 | 169 | ctx.font = cellHeight + "px monospace"; |
| 160 | 170 | |
| 161 | var offsetX = this.pf.getMinX() * cellWidth * -1; | |
| 162 | var offsetY = this.pf.getMinY() * cellHeight * -1; | |
| 171 | var offsetX = (this.getLowerX() || 0) * cellWidth * -1; | |
| 172 | var offsetY = (this.getLowerY() || 0) * cellHeight * -1; | |
| 163 | 173 | |
| 164 | 174 | if (this.fixedPosition) { |
| 165 | 175 | offsetX = 0; |