Mercurial Repositories > eric / file comparison
comparison: E5Graphics/E5GraphicsView.py
E5Graphics/E5GraphicsView.py
- changeset 945
- 8cd4d08fa9f6
- parent 791
- 9ec2ac20e54e
- child 1112
- 8a7d1b9d18db
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| 944:1b59c4ba121e | 945:8cd4d08fa9f6 |
|---|---|
| 11 | 11 |
| 12 from PyQt4.QtCore import * | 12 from PyQt4.QtCore import * |
| 13 from PyQt4.QtGui import * | 13 from PyQt4.QtGui import * |
| 14 | 14 |
| 15 import Preferences | 15 import Preferences |
| 16 | |
| 16 | 17 |
| 17 class E5GraphicsView(QGraphicsView): | 18 class E5GraphicsView(QGraphicsView): |
| 18 """ | 19 """ |
| 19 Class implementing a graphics view. | 20 Class implementing a graphics view. |
| 20 """ | 21 """ |
| 21 def __init__(self, scene, parent = None): | 22 def __init__(self, scene, parent=None): |
| 22 """ | 23 """ |
| 23 Constructor | 24 Constructor |
| 24 | 25 |
| 25 @param scene reference to the scene object (QGraphicsScene) | 26 @param scene reference to the scene object (QGraphicsScene) |
| 26 @param parent parent widget (QWidget) | 27 @param parent parent widget (QWidget) |
| 90 | 91 |
| 91 @return current zoom factor (float) | 92 @return current zoom factor (float) |
| 92 """ | 93 """ |
| 93 return self.matrix().m11() | 94 return self.matrix().m11() |
| 94 | 95 |
| 95 def resizeScene(self, amount, isWidth = True): | 96 def resizeScene(self, amount, isWidth=True): |
| 96 """ | 97 """ |
| 97 Public method to resize the scene. | 98 Public method to resize the scene. |
| 98 | 99 |
| 99 @param isWidth flag indicating width is to be resized (boolean) | 100 @param isWidth flag indicating width is to be resized (boolean) |
| 100 @param amount size increment (integer) | 101 @param amount size increment (integer) |
| 124 rect = self.scene().sceneRect() | 125 rect = self.scene().sceneRect() |
| 125 rect.setHeight(height) | 126 rect.setHeight(height) |
| 126 rect.setWidth(width) | 127 rect.setWidth(width) |
| 127 self.setSceneRect(rect) | 128 self.setSceneRect(rect) |
| 128 | 129 |
| 129 def _getDiagramRect(self, border = 0): | 130 def _getDiagramRect(self, border=0): |
| 130 """ | 131 """ |
| 131 Protected method to calculate the minimum rectangle fitting the diagram. | 132 Protected method to calculate the minimum rectangle fitting the diagram. |
| 132 | 133 |
| 133 @param border border width to include in the calculation (integer) | 134 @param border border width to include in the calculation (integer) |
| 134 @return the minimum rectangle (QRectF) | 135 @return the minimum rectangle (QRectF) |
| 139 endy = 0 | 140 endy = 0 |
| 140 items = self.filteredItems(list(self.scene().items())) | 141 items = self.filteredItems(list(self.scene().items())) |
| 141 for itm in items: | 142 for itm in items: |
| 142 rect = itm.sceneBoundingRect() | 143 rect = itm.sceneBoundingRect() |
| 143 itmEndX = rect.x() + rect.width() | 144 itmEndX = rect.x() + rect.width() |
| 144 itmEndY = rect.y()+ rect.height() | 145 itmEndY = rect.y() + rect.height() |
| 145 itmStartX = rect.x() | 146 itmStartX = rect.x() |
| 146 itmStartY = rect.y() | 147 itmStartY = rect.y() |
| 147 if startx >= itmStartX: | 148 if startx >= itmStartX: |
| 148 startx = itmStartX | 149 startx = itmStartX |
| 149 if starty >= itmStartY: | 150 if starty >= itmStartY: |
| 158 endx += border | 159 endx += border |
| 159 endy += border | 160 endy += border |
| 160 | 161 |
| 161 return QRectF(startx, starty, endx - startx + 1, endy - starty + 1) | 162 return QRectF(startx, starty, endx - startx + 1, endy - starty + 1) |
| 162 | 163 |
| 163 def _getDiagramSize(self, border = 0): | 164 def _getDiagramSize(self, border=0): |
| 164 """ | 165 """ |
| 165 Protected method to calculate the minimum size fitting the diagram. | 166 Protected method to calculate the minimum size fitting the diagram. |
| 166 | 167 |
| 167 @param border border width to include in the calculation (integer) | 168 @param border border width to include in the calculation (integer) |
| 168 @return the minimum size (QSizeF) | 169 @return the minimum size (QSizeF) |
| 171 endy = 0 | 172 endy = 0 |
| 172 items = self.filteredItems(list(self.scene().items())) | 173 items = self.filteredItems(list(self.scene().items())) |
| 173 for itm in items: | 174 for itm in items: |
| 174 rect = itm.sceneBoundingRect() | 175 rect = itm.sceneBoundingRect() |
| 175 itmEndX = rect.x() + rect.width() | 176 itmEndX = rect.x() + rect.width() |
| 176 itmEndY = rect.y()+ rect.height() | 177 itmEndY = rect.y() + rect.height() |
| 177 if endx <= itmEndX: | 178 if endx <= itmEndX: |
| 178 endx = itmEndX | 179 endx = itmEndX |
| 179 if endy <= itmEndY: | 180 if endy <= itmEndY: |
| 180 endy = itmEndY | 181 endy = itmEndY |
| 181 if border: | 182 if border: |
| 182 endx += border | 183 endx += border |
| 183 endy += border | 184 endy += border |
| 184 | 185 |
| 185 return QSizeF(endx + 1, endy + 1) | 186 return QSizeF(endx + 1, endy + 1) |
| 186 | 187 |
| 187 def __getDiagram(self, rect, format = "PNG", filename = None): | 188 def __getDiagram(self, rect, format="PNG", filename=None): |
| 188 """ | 189 """ |
| 189 Private method to retrieve the diagram from the scene fitting it | 190 Private method to retrieve the diagram from the scene fitting it |
| 190 in the minimum rectangle. | 191 in the minimum rectangle. |
| 191 | 192 |
| 192 @param rect minimum rectangle fitting the diagram (QRectF) | 193 @param rect minimum rectangle fitting the diagram (QRectF) |
| 193 @param format format for the image file (string) | 194 @param format format for the image file (string) |
| 194 @param filename name of the file for non pixmaps (string) | 195 @param filename name of the file for non pixmaps (string) |
| 220 for item in selectedItems: | 221 for item in selectedItems: |
| 221 item.setSelected(True) | 222 item.setSelected(True) |
| 222 | 223 |
| 223 return paintDevice | 224 return paintDevice |
| 224 | 225 |
| 225 def saveImage(self, filename, format = "PNG"): | 226 def saveImage(self, filename, format="PNG"): |
| 226 """ | 227 """ |
| 227 Public method to save the scene to a file. | 228 Public method to save the scene to a file. |
| 228 | 229 |
| 229 @param filename name of the file to write the image to (string) | 230 @param filename name of the file to write the image to (string) |
| 230 @param format format for the image file (string) | 231 @param format format for the image file (string) |
| 231 @return flag indicating success (boolean) | 232 @return flag indicating success (boolean) |
| 232 """ | 233 """ |
| 233 rect = self._getDiagramRect(self.border) | 234 rect = self._getDiagramRect(self.border) |
| 234 if format == "SVG": | 235 if format == "SVG": |
| 235 self.__getDiagram(rect, format = format, filename = filename) | 236 self.__getDiagram(rect, format=format, filename=filename) |
| 236 return True | 237 return True |
| 237 else: | 238 else: |
| 238 pixmap = self.__getDiagram(rect) | 239 pixmap = self.__getDiagram(rect) |
| 239 return pixmap.save(filename, format) | 240 return pixmap.save(filename, format) |
| 240 | 241 |
| 241 def printDiagram(self, printer, diagramName = ""): | 242 def printDiagram(self, printer, diagramName=""): |
| 242 """ | 243 """ |
| 243 Public method to print the diagram. | 244 Public method to print the diagram. |
| 244 | 245 |
| 245 @param printer reference to a ready configured printer object (QPrinter) | 246 @param printer reference to a ready configured printer object (QPrinter) |
| 246 @param diagramName name of the diagram (string) | 247 @param diagramName name of the diagram (string) |
| 312 # write a foot note | 313 # write a foot note |
| 313 s = self.trUtf8("Diagram: {0}, Page {1}").format(diagramName, page + 1) | 314 s = self.trUtf8("Diagram: {0}, Page {1}").format(diagramName, page + 1) |
| 314 tc = QColor(50, 50, 50) | 315 tc = QColor(50, 50, 50) |
| 315 painter.setPen(tc) | 316 painter.setPen(tc) |
| 316 painter.drawRect(marginX, marginY, width, height) | 317 painter.drawRect(marginX, marginY, width, height) |
| 317 painter.drawLine(marginX, marginY + height + 2, | 318 painter.drawLine(marginX, marginY + height + 2, |
| 318 marginX + width, marginY + height + 2) | 319 marginX + width, marginY + height + 2) |
| 319 painter.setFont(font) | 320 painter.setFont(font) |
| 320 painter.drawText(marginX, marginY + height + 4, width, | 321 painter.drawText(marginX, marginY + height + 4, width, |
| 321 fontHeight, Qt.AlignRight, s) | 322 fontHeight, Qt.AlignRight, s) |
| 322 if not finishX or not finishY: | 323 if not finishX or not finishY: |
