List of usage examples for com.google.gwt.canvas.dom.client Context2d setFillStyle
public final void setFillStyle(String fillStyleColor)
From source file:org.primaresearch.web.gwt.client.ui.page.tool.drawing.EditOutlineTool.java
License:Apache License
@Override public void render(PageRenderer renderer) { if (!isEnabled()) return;//w w w .j a v a2s . co m Context2d context = renderer.getContext(); //Draw the selected outline in red RenderStyle style = new RenderStyle("rgb(255,0,0)", "transparent", 1.0); PolygonRendererHelper.drawPolygon(context, polygon, style, renderer.getZoomFactor(), true, false); //Delete mode if (deletePointsMode) { if (currentPolygonPoint != null) { context.setFillStyle(DELETE_POINT_FILL_COLOR); context.setStrokeStyle(DELETE_POINT_LINE_COLOR); context.setLineWidth(1.0 / renderer.getZoomFactor()); //Cross context.beginPath(); int size = (int) (3.0 / view.getZoomFactor()); context.moveTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y - 3 * size); context.lineTo(currentPolygonPoint.x, currentPolygonPoint.y - size); context.lineTo(currentPolygonPoint.x + 2 * size, currentPolygonPoint.y - 3 * size); context.lineTo(currentPolygonPoint.x + 3 * size, currentPolygonPoint.y - 2 * size); context.lineTo(currentPolygonPoint.x + size, currentPolygonPoint.y); context.lineTo(currentPolygonPoint.x + 3 * size, currentPolygonPoint.y + 2 * size); context.lineTo(currentPolygonPoint.x + 2 * size, currentPolygonPoint.y + 3 * size); context.lineTo(currentPolygonPoint.x, currentPolygonPoint.y + size); context.lineTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y + 3 * size); context.lineTo(currentPolygonPoint.x - 3 * size, currentPolygonPoint.y + 2 * size); context.lineTo(currentPolygonPoint.x - size, currentPolygonPoint.y); context.lineTo(currentPolygonPoint.x - 3 * size, currentPolygonPoint.y - 2 * size); context.lineTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y - 3 * size); context.fill(); context.stroke(); } } //Add or move mode else { //Move point if (currentPolygonPoint != null) { context.setFillStyle(POINT_HIGHLIGHT_FILL_COLOR); context.setStrokeStyle(POINT_HIGHLIGHT_LINE_COLOR); context.setLineWidth(1.0 / renderer.getZoomFactor()); int size = (int) (3.0 / view.getZoomFactor()); //Rect in centre context.beginPath(); context.rect(currentPolygonPoint.x - size, currentPolygonPoint.y - size, 2 * size + 1, 2 * size + 1); context.fill(); context.stroke(); //Arrows // Left context.beginPath(); context.moveTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y + size); context.lineTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y - size); context.lineTo(currentPolygonPoint.x - 3 * size, currentPolygonPoint.y); context.lineTo(currentPolygonPoint.x - 2 * size, currentPolygonPoint.y + size); context.fill(); context.stroke(); // Right context.beginPath(); context.moveTo(currentPolygonPoint.x + 2 * size, currentPolygonPoint.y + size); context.lineTo(currentPolygonPoint.x + 2 * size, currentPolygonPoint.y - size); context.lineTo(currentPolygonPoint.x + 3 * size, currentPolygonPoint.y); context.lineTo(currentPolygonPoint.x + 2 * size, currentPolygonPoint.y + size); context.fill(); context.stroke(); // Top context.beginPath(); context.moveTo(currentPolygonPoint.x + size, currentPolygonPoint.y - 2 * size); context.lineTo(currentPolygonPoint.x - size, currentPolygonPoint.y - 2 * size); context.lineTo(currentPolygonPoint.x, currentPolygonPoint.y - 3 * size); context.lineTo(currentPolygonPoint.x + size, currentPolygonPoint.y - 2 * size); context.fill(); context.stroke(); // Bottom context.beginPath(); context.moveTo(currentPolygonPoint.x + size, currentPolygonPoint.y + 2 * size); context.lineTo(currentPolygonPoint.x - size, currentPolygonPoint.y + 2 * size); context.lineTo(currentPolygonPoint.x, currentPolygonPoint.y + 3 * size); context.lineTo(currentPolygonPoint.x + size, currentPolygonPoint.y + 2 * size); context.fill(); context.stroke(); } //Add point if (newPolygonPointCandidate != null) { context.setFillStyle(POINT_HIGHLIGHT_FILL_COLOR); context.setStrokeStyle(POINT_HIGHLIGHT_LINE_COLOR); context.setLineWidth(1.0 / renderer.getZoomFactor()); //Plus sign context.beginPath(); int size = (int) (3.0 / view.getZoomFactor()); context.moveTo(newPolygonPointCandidate.x - size, newPolygonPointCandidate.y - 3 * size); context.lineTo(newPolygonPointCandidate.x + size, newPolygonPointCandidate.y - 3 * size); context.lineTo(newPolygonPointCandidate.x + size, newPolygonPointCandidate.y - size); context.lineTo(newPolygonPointCandidate.x + 3 * size, newPolygonPointCandidate.y - size); context.lineTo(newPolygonPointCandidate.x + 3 * size, newPolygonPointCandidate.y + size); context.lineTo(newPolygonPointCandidate.x + size, newPolygonPointCandidate.y + size); context.lineTo(newPolygonPointCandidate.x + size, newPolygonPointCandidate.y + 3 * size); context.lineTo(newPolygonPointCandidate.x - size, newPolygonPointCandidate.y + 3 * size); context.lineTo(newPolygonPointCandidate.x - size, newPolygonPointCandidate.y + size); context.lineTo(newPolygonPointCandidate.x - 3 * size, newPolygonPointCandidate.y + size); context.lineTo(newPolygonPointCandidate.x - 3 * size, newPolygonPointCandidate.y - size); context.lineTo(newPolygonPointCandidate.x - size, newPolygonPointCandidate.y - size); context.lineTo(newPolygonPointCandidate.x - size, newPolygonPointCandidate.y - 3 * size); context.fill(); context.stroke(); } } }
From source file:org.primordion.xholon.io.GridPanel.java
License:Open Source License
/** * Draw the grid.//from w ww .ja v a 2s . com * @param ctx A GWT Context2d object. */ protected void drawGrid(Context2d ctx) { AbstractGrid currentCell = upperLeft; AbstractGrid startOfRow = upperLeft; for (int i = 0; i < nRows; i++) { for (int j = 0; j < nCols; j++) { if (this.isIncognita(currentCell)) { ctx.setFillStyle(TERRA_INCOGNITA_COLOR); ctx.beginPath(); ctx.rect(j * cellSize, i * cellSize, cellSize, cellSize); ctx.closePath(); ctx.fill(); } else { if ((xholonConsole != null) && (currentCell == xholonConsole.getContext())) { ctx.setFillStyle(COLOR_CONTEXT); } else { ctx.setFillStyle(getColor(currentCell)); } ctx.beginPath(); ctx.rect(j * cellSize, i * cellSize, cellSize, cellSize); ctx.closePath(); ctx.fill(); if (useShapes) { drawAgents(ctx, currentCell, j * cellSize, i * cellSize); } } currentCell = (AbstractGrid) currentCell.port[IGrid.P_EAST]; // get next cell } startOfRow = (AbstractGrid) startOfRow.port[IGrid.P_SOUTH]; // get start of next row currentCell = (AbstractGrid) startOfRow; } }
From source file:org.primordion.xholon.io.GridPanel.java
License:Open Source License
/** * Draw a hexagonal grid./* w ww . j a v a2 s . c o m*/ * @param ctx A GWT Context2d object. */ protected void drawHexGrid(Context2d ctx) { AbstractGrid currentCell = upperLeft; AbstractGrid startOfRow = upperLeft; if (xCoorHex == null) { // initialize xCoorHex = new int[6]; xCoorHex[0] = (int) (0.25 * cellSize); xCoorHex[1] = (int) (1.0 * cellSize); xCoorHex[2] = (int) (1.25 * cellSize); xCoorHex[3] = (int) (1.0 * cellSize); xCoorHex[4] = (int) (0.25 * cellSize); xCoorHex[5] = (int) (0.0 * cellSize); yCoorHex = new int[6]; yCoorHex[0] = (int) (1.0 * cellSize); yCoorHex[1] = (int) (1.0 * cellSize); yCoorHex[2] = (int) (0.5 * cellSize); yCoorHex[3] = (int) (0.0 * cellSize); yCoorHex[4] = (int) (0.0 * cellSize); yCoorHex[5] = (int) (0.5 * cellSize); } int nPoints = 6; int i, j; for (i = 0; i < nRows; i++) { for (j = 0; j < nCols; j++) { //ctx.setFillStyle(getColor(currentCell)); if ((xholonConsole != null) && (currentCell == xholonConsole.getContext())) { ctx.setFillStyle(COLOR_CONTEXT); } else { ctx.setFillStyle(getColor(currentCell)); } if (Misc.isEven(j)) { drawPolygon(ctx, j * cellSize, (int) (i * cellSize - 0.5 * cellSize), xCoorHex, yCoorHex, nPoints); if (useShapes) { drawAgents(ctx, currentCell, (int) (j * cellSize + 0.5 * cellSize), (int) i * cellSize); } currentCell = (AbstractGrid) currentCell.port[IGrid.P_HEX1]; // get next cell } else { // odd drawPolygon(ctx, j * cellSize, (int) (i * cellSize), xCoorHex, yCoorHex, nPoints); if (useShapes) { drawAgents(ctx, currentCell, (int) (j * cellSize + 0.5 * cellSize), (int) (i * cellSize + 0.5 * cellSize)); } currentCell = (AbstractGrid) currentCell.port[IGrid.P_HEX2]; // get next cell } } startOfRow = (AbstractGrid) startOfRow.port[IGrid.P_HEX3]; // get start of next row currentCell = (AbstractGrid) startOfRow; if (Misc.isEven(nCols)) { //hexagon.translate(-(j*cellSize), cellSize); // TODO ? } else { // odd //hexagon.translate(-(j*cellSize), (int)(0.5*cellSize)); // TODO ? } } }
From source file:org.primordion.xholon.io.GridPanel.java
License:Open Source License
/** * Draw a 1D CA grid.//from w ww. j ava 2s . c o m * @param ctx A GWT Context2d object. */ protected void draw1dCaGrid(Context2d ctx) { AbstractGrid currentCell = upperLeft; AbstractGrid startOfRow = upperLeft; for (int i = 0; i < nRows; i++) { for (int j = 0; j < nCols; j++) { //ctx.setFillStyle(getColor(currentCell)); if ((xholonConsole != null) && (currentCell == xholonConsole.getContext())) { ctx.setFillStyle(COLOR_CONTEXT); } else { ctx.setFillStyle(getColor(currentCell)); } ctx.beginPath(); ctx.rect(j * cellSize, i * cellSize, cellSize, cellSize); ctx.closePath(); ctx.fill(); if (useShapes) { drawAgents(ctx, currentCell, j * cellSize, i * cellSize); } currentCell = (AbstractGrid) currentCell.port[IGrid.P_CARIGHTNEIGHBOR]; // get next cell } startOfRow = (AbstractGrid) startOfRow.port[IGrid.P_CAFUTURESELF]; // get start of next row currentCell = (AbstractGrid) startOfRow; } }
From source file:org.primordion.xholon.io.GridPanel.java
License:Open Source License
/** * Draw agents within the current grid cell. * Only one agent is drawn, for now.//from ww w . j a v a 2 s .c o m * GWT code to draw a triangle: <code> Canvas canvas = Canvas.createIfSupported(); Context2d context1 = canvas.getContext2d(); context1.beginPath(); context1.moveTo(25,0); context1.lineTo(0,20); context1.lineTo(25,40); context1.lineTo(25,0); context1.fill(); context1.closePath(); </code> * @param ctx A GWT Context2d object. * @param currentCell The grid cell that the agents will draw themselves in. * @param x X coordinate of the grid cell. * @param y Y coordinate of the grid cell. */ protected void drawAgents(Context2d ctx, AbstractGrid currentCell, int x, int y) { IXholon agent = currentCell.getFirstChild(); // this should remain as getFirstChild() if (agent != null) { if (useIcons) { // Test of drawImage() String icon = ((IDecoration) agent.getXhc()).getIcon(); if (icon != null) { drawImage(ctx, icon, x, y, cellSize, cellSize); return; } } ctx.setFillStyle(getColor(agent)); int shape = getShape(agent); switch (shape) { case GPSHAPE_CIRCLE: // OK { ctx.beginPath(); int xcentre = x + (int) (cellSize * 0.5); int ycentre = y + (int) (cellSize * 0.5); int radius = (int) (cellSize * 0.45); ctx.arc(xcentre, ycentre, radius, 0, Math.PI * 2); ctx.closePath(); ctx.fill(); } break; case GPSHAPE_TRIANGLE: // OK { int xCoor[] = { (int) (0.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize) }; int yCoor[] = { (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.0 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 3); //Polygon triangle = new Polygon(xCoor, yCoor, 3); //triangle.translate(x, y); //g.fillPolygon(triangle); /*ctx.save(); ctx.translate(x, y); ctx.beginPath(); ctx.moveTo(0.0*cellSize, 1.0*cellSize); ctx.lineTo(1.0*cellSize, 1.0*cellSize); ctx.lineTo(0.5*cellSize, 0.0*cellSize); ctx.lineTo(0.0*cellSize, 1.0*cellSize); ctx.fill(); ctx.closePath(); ctx.restore();*/ } break; case GPSHAPE_RECTANGLE: // OK { int xCoor[] = { (int) (0.1 * cellSize), (int) (0.9 * cellSize), (int) (0.9 * cellSize), (int) (0.1 * cellSize) }; int yCoor[] = { (int) (0.9 * cellSize), (int) (0.9 * cellSize), (int) (0.1 * cellSize), (int) (0.1 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 4); //Polygon rectangle = new Polygon(xCoor, yCoor, 4); //rectangle.translate(x, y); //g.fillPolygon(rectangle); /*ctx.save(); ctx.translate(x, y); ctx.beginPath(); ctx.moveTo(0.1*cellSize, 0.9*cellSize); ctx.lineTo(0.9*cellSize, 0.9*cellSize); ctx.lineTo(0.9*cellSize, 0.1*cellSize); ctx.lineTo(0.1*cellSize, 0.1*cellSize); ctx.lineTo(0.1*cellSize, 0.9*cellSize); ctx.fill(); ctx.closePath(); ctx.restore();*/ } break; case GPSHAPE_PENTAGON: { int xCoor[] = { (int) (0.2 * cellSize), (int) (0.8 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize), (int) (0.0 * cellSize), (int) (0.5 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 5); //Polygon pentagon = new Polygon(xCoor, yCoor, 5); //pentagon.translate(x, y); //g.fillPolygon(pentagon); } break; case GPSHAPE_HEXAGON: { int xCoor[] = { (int) (0.25 * cellSize), (int) (0.75 * cellSize), (int) (1.0 * cellSize), (int) (0.75 * cellSize), (int) (0.25 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize), (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (0.5 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 6); //ctx.beginPath(); //drawPolygon(ctx, x, y, 0.5, 6, 0, false); //ctx.fill(); //Polygon hexagon = new Polygon(xCoor, yCoor, 6); //hexagon.translate(x, y); //g.fillPolygon(hexagon); } break; case GPSHAPE_OCTOGON: { int xCoor[] = { (int) (0.3 * cellSize), (int) (0.7 * cellSize), (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.7 * cellSize), (int) (0.3 * cellSize), (int) (0.0 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.7 * cellSize), (int) (0.3 * cellSize), (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (0.3 * cellSize), (int) (0.7 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 8); //Polygon octogon = new Polygon(xCoor, yCoor, 8); //octogon.translate(x, y); //g.fillPolygon(octogon); } break; case GPSHAPE_STAR: { int xCoor[] = { (int) (0.5 * cellSize), (int) (1.0 * cellSize), (int) (0.8 * cellSize), (int) (1.0 * cellSize), (int) (0.7 * cellSize), (int) (0.5 * cellSize), (int) (0.3 * cellSize), (int) (0.0 * cellSize), (int) (0.2 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (0.8 * cellSize), (int) (1.0 * cellSize), (int) (0.7 * cellSize), (int) (0.4 * cellSize), (int) (0.4 * cellSize), (int) (0.0 * cellSize), (int) (0.4 * cellSize), (int) (0.4 * cellSize), (int) (0.7 * cellSize), (int) (1.0 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 10); //Polygon star = new Polygon(xCoor, yCoor, 10); //star.translate(x, y); //g.fillPolygon(star); } break; case GPSHAPE_TURTLE: { int xCoor[] = { (int) (0.5 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (0.7 * cellSize), (int) (1.0 * cellSize), (int) (0.0 * cellSize), (int) (1.0 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 4); //Polygon turtle = new Polygon(xCoor, yCoor, 4); //turtle.translate(x, y); //g.fillPolygon(turtle); } break; case GPSHAPE_SMALLCIRCLE: { ctx.beginPath(); int xcentre = x + (int) (cellSize * 0.5); int ycentre = y + (int) (cellSize * 0.5); int radius = (int) (cellSize * 0.25); ctx.arc(xcentre, ycentre, radius, 0, Math.PI * 2); ctx.closePath(); ctx.fill(); } break; case GPSHAPE_SMALLRECTANGLE: { int xCoor[] = { (int) (0.25 * cellSize), (int) (0.75 * cellSize), (int) (0.75 * cellSize), (int) (0.25 * cellSize) }; int yCoor[] = { (int) (0.75 * cellSize), (int) (0.75 * cellSize), (int) (0.25 * cellSize), (int) (0.25 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 4); } break; case GPSHAPE_REVERSETRIANGLE: { int xCoor[] = { (int) (0.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize) }; int yCoor[] = { (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (1.0 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 3); } break; case GPSHAPE_CROSS: { int xCoor[] = { (int) (0.33 * cellSize), (int) (0.67 * cellSize), (int) (0.67 * cellSize), (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.67 * cellSize), (int) (0.67 * cellSize), (int) (0.33 * cellSize), (int) (0.33 * cellSize), (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (0.33 * cellSize) }; int yCoor[] = { (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (0.33 * cellSize), (int) (0.33 * cellSize), (int) (0.67 * cellSize), (int) (0.67 * cellSize), (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.67 * cellSize), (int) (0.67 * cellSize), (int) (0.33 * cellSize), (int) (0.33 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 12); } break; case GPSHAPE_DIAMOND: { int xCoor[] = { (int) (0.5 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (0.0 * cellSize), (int) (0.5 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 4); } break; case GPSHAPE_WYE: { int xCoor[] = { (int) (0.25 * cellSize), (int) (0.5 * cellSize), (int) (0.75 * cellSize), (int) (1.0 * cellSize), (int) (0.75 * cellSize), (int) (0.75 * cellSize), (int) (0.25 * cellSize), (int) (0.25 * cellSize), (int) (0.0 * cellSize), }; int yCoor[] = { (int) (0.0 * cellSize), (int) (0.25 * cellSize), (int) (0.0 * cellSize), (int) (0.25 * cellSize), (int) (0.75 * cellSize), (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.75 * cellSize), (int) (0.25 * cellSize), }; drawPolygon(ctx, x, y, xCoor, yCoor, 9); } break; case GPSHAPE_LRTRIANGLE: { int xCoor[] = { (int) (0.0 * cellSize), (int) (0.0 * cellSize), (int) (1.0 * cellSize) }; int yCoor[] = { (int) (0.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 3); } break; case GPSHAPE_RLTRIANGLE: { int xCoor[] = { (int) (1.0 * cellSize), (int) (1.0 * cellSize), (int) (0.0 * cellSize) }; int yCoor[] = { (int) (0.0 * cellSize), (int) (1.0 * cellSize), (int) (0.5 * cellSize) }; drawPolygon(ctx, x, y, xCoor, yCoor, 3); } break; case GPSHAPE_JAVASCRIPTCODE: this.makeJsShape(ctx, ((IDecoration) agent.getXhc()).getSymbol().substring(JSCODE_INDICATOR_LEN), x, y, cellSize); break; case GPSHAPE_NOSHAPE: break; default: // the agent's shape directly specifies the number of sides { ctx.beginPath(); drawPolygon(ctx, x, y, cellSize * 0.5, shape, 0, false); ctx.fill(); } } } }
From source file:org.rstudio.core.client.widget.FontDetector.java
License:Open Source License
public static boolean isFontSupported(String fontName) { SimplePanel panel = null;//from www . ja v a2 s. co m try { // default font name as a reference point final String defaultFontName = "Arial"; if (defaultFontName.equals(fontName)) return true; // make sure canvas is supported if (!Canvas.isSupported()) return false; // add a temporary div to the dom panel = new SimplePanel(); panel.setHeight("200px"); panel.getElement().getStyle().setVisibility(Visibility.HIDDEN); panel.getElement().getStyle().setOverflow(Overflow.SCROLL); RootPanel.get().add(panel, -2000, -2000); // add a canvas element to the div and get the 2d drawing context final Canvas canvas = Canvas.createIfSupported(); canvas.setWidth("512px"); canvas.setHeight("64px"); canvas.getElement().getStyle().setLeft(400, Unit.PX); canvas.getElement().getStyle().setBackgroundColor("#ffe"); panel.add(canvas); final Context2d ctx = canvas.getContext2d(); ctx.setFillStyle("#000000"); // closure to generate a hash for a font class HashGenerator { public String getHash(String fontName) { ctx.setFont("57px " + fontName + ", " + defaultFontName); int width = canvas.getOffsetWidth(); int height = canvas.getOffsetHeight(); ctx.clearRect(0, 0, width, height); ctx.fillText("TheQuickBrownFox", 2, 50); return canvas.toDataUrl(); } } ; // get hashes and compare them HashGenerator hashGenerator = new HashGenerator(); String defaultHash = hashGenerator.getHash(defaultFontName); String fontHash = hashGenerator.getHash(fontName); return !defaultHash.equals(fontHash); } catch (Exception ex) { Debug.log(ex.toString()); return false; } finally { if (panel != null) RootPanel.get().remove(panel); } }
From source file:org.rstudio.studio.client.workbench.views.vcs.dialog.graph.GraphLine.java
License:Open Source License
private void draw(Canvas canvas, GraphTheme theme) { int height = theme.getRowHeight(); int colWidth = theme.getColumnWidth(); double pad = theme.getVerticalLinePadding(); canvas.setCoordinateSpaceHeight(height); canvas.setCoordinateSpaceWidth(colWidth * getTotalWidth(theme)); Context2d ctx = canvas.getContext2d(); //ctx.clearRect(0, 0, colWidth * columns_.length, height); ctx.translate(colWidth / 2.0, 0);//from w w w . j a va 2s .c o m int startPos = -1; int endPos = -1; int nexusColumn = -1; for (int i = 0; i < columns_.length; i++) { GraphColumn c = columns_[i]; if (!c.start) startPos++; if (!c.end) endPos++; ctx.setStrokeStyle(theme.getColorForId(c.id)); ctx.setLineWidth(theme.getStrokeWidth()); ctx.setLineJoin(LineJoin.ROUND); if (!c.nexus && !c.start && !c.end) { // Just draw a line from start to end position ctx.beginPath(); ctx.moveTo(startPos * colWidth, 0); ctx.lineTo(startPos * colWidth, pad); // This next lineTo helps ensure that the shape of the line looks // congruous to any specials on the same line ctx.lineTo(Math.min(startPos, endPos) * colWidth, height / 2.0); ctx.lineTo(endPos * colWidth, height - pad); ctx.lineTo(endPos * colWidth, height); ctx.stroke(); } else { // something special if (c.nexus) { nexusColumn = i; ctx.setFillStyle(theme.getColorForId(c.id)); } if (!c.start) { // draw from i to nexusColumn; ctx.beginPath(); ctx.moveTo(startPos * colWidth, 0); ctx.lineTo(startPos * colWidth, pad); ctx.lineTo(nexusColumn * colWidth, height / 2.0); ctx.stroke(); } if (!c.end) { // draw from nexusColumn to endPosition ctx.beginPath(); ctx.moveTo(nexusColumn * colWidth, height / 2.0); ctx.lineTo(endPos * colWidth, height - pad); ctx.lineTo(endPos * colWidth, height); ctx.stroke(); } } } // draw a circle on the nexus ctx.beginPath(); ctx.arc(nexusColumn * colWidth, height / 2.0, theme.getCircleRadius() + theme.getStrokeWidth(), 0, Math.PI * 2); ctx.closePath(); ctx.fill(); ctx.beginPath(); ctx.arc(nexusColumn * colWidth, height / 2.0, theme.getCircleRadius(), 0, Math.PI * 2); ctx.closePath(); ctx.setFillStyle("white"); ctx.fill(); }
From source file:org.rstudio.studio.client.workbench.views.vcs.diff.NavGutter.java
License:Open Source License
public void setData(CssColor background, ArrayList<CssColor> lines) { Canvas newCanvas = Canvas.createIfSupported(); newCanvas.setSize("100%", "100%"); newCanvas.setCoordinateSpaceWidth(10); newCanvas.setCoordinateSpaceHeight(lines.size()); Context2d ctx = newCanvas.getContext2d(); ctx.translate(0.5, 0.5);//from ww w .ja v a 2 s .c o m ctx.setFillStyle(background.value()); ctx.fillRect(0, 0, 10, lines.size()); for (int i = 0; i < lines.size(); i++) { CssColor color = lines.get(i); if (color != null) { ctx.setFillStyle(color.value()); ctx.fillRect(0, i, 10, 1); } } container_.setWidget(newCanvas); }
From source file:org.teavm.samples.benchmark.gwt.BenchmarkStarter.java
License:Apache License
private void render() { Context2d context = canvas.getContext2d(); context.setFillStyle("white"); context.setStrokeStyle("grey"); context.fillRect(0, 0, 600, 600);// w w w . j a va 2 s . c om context.save(); context.translate(0, 600); context.scale(1, -1); context.scale(100, 100); context.setLineWidth(0.01); for (Body body = scene.getWorld().getBodyList(); body != null; body = body.getNext()) { Vec2 center = body.getPosition(); context.save(); context.translate(center.x, center.y); context.rotate(body.getAngle()); for (Fixture fixture = body.getFixtureList(); fixture != null; fixture = fixture.getNext()) { Shape shape = fixture.getShape(); if (shape.getType() == ShapeType.CIRCLE) { CircleShape circle = (CircleShape) shape; context.beginPath(); context.arc(circle.m_p.x, circle.m_p.y, circle.getRadius(), 0, Math.PI * 2, true); context.closePath(); context.stroke(); } else if (shape.getType() == ShapeType.POLYGON) { PolygonShape poly = (PolygonShape) shape; Vec2[] vertices = poly.getVertices(); context.beginPath(); context.moveTo(vertices[0].x, vertices[0].y); for (int i = 1; i < poly.getVertexCount(); ++i) { context.lineTo(vertices[i].x, vertices[i].y); } context.closePath(); context.stroke(); } } context.restore(); } context.restore(); }
From source file:org.thole.hendrik.mandelbrot.gwt.client.impl.MandelBrotImpl.java
License:Open Source License
private final void paintMandel(final Context2d context) { final double inx = (xe - xa) / size_x; final double iny = (ye - ya) / size_y; ix = xa;//from w w w . jav a 2 s . c o m Scheduler.get().scheduleIncremental(new RepeatingCommand() { @Override public boolean execute() { if (ix <= xe) { for (iy = ya; iy <= ye; iy += iny) { it = 0; zr = 0; zi = 0; do { zrq = zr * zr; ziq = zi * zi; it++; zi = 2 * zr * zi + iy; zr = zrq - ziq + ix; } while (zrq + ziq < 4 && it < itmax); context.setFillStyle(it2C(it)); context.fillRect((ix - xa) / inx, (iy - ya) / iny, 1, 1); } ix += inx; return true; } return false; } }); // for (ix = xa; ix <= xe; ix += inx) { // for (iy = ya; iy <= ye; iy += iny) { // it = 0; // zr = 0; // zi = 0; // do { // zrq = zr * zr; // ziq = zi * zi; // it++; // zi = 2 * zr * zi + iy; // zr = zrq - ziq + ix; // } while (zrq + ziq < 4 && it < itmax); // // context.setFillStyle(it2C(it)); // context.fillRect((ix-xa)/inx, (iy-ya)/iny, 1, 1); // } // } }