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authorgspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
committergspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
commit05b47f7a8c5451f858dc220df0e3a97542edace6 (patch)
treea2273d619f0625c9d44d40842845ccce2eac1045 /o3d/samples/canvas-fonts.html
parent5cdc8bdb4c847cefe7f4542bd10c9880c2c557a0 (diff)
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This is the O3D source tree's initial commit to the Chromium tree. It
is not built or referenced at all by the chrome build yet, and doesn't yet build in it's new home. We'll change that shortly. git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98
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+<!--
+Copyright 2009, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
+
+<!--
+ Sample demonstrating different fonts used for text rendering using
+ the Canvas API.
+-->
+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>
+O3D Canvas
+</title>
+<!-- Include sample javascript library functions-->
+<script type="text/javascript" src="o3djs/base.js"></script>
+
+<!-- Our javascript code -->
+<script type="text/javascript">
+o3djs.require('o3djs.util');
+o3djs.require('o3djs.math');
+o3djs.require('o3djs.primitives');
+o3djs.require('o3djs.effect');
+o3djs.require('o3djs.canvas');
+o3djs.require('o3djs.rendergraph');
+
+// Events
+// init() once the page has finished loading.
+// unload() when the page is unloaded.
+window.onload = createClients;
+
+// Globals
+var g_client;
+var g_pack;
+var g_viewInfo;
+var g_math;
+var g_o3d;
+var g_finished = false; // for selenium testing.
+
+function createClients() {
+ o3djs.util.makeClients(init);
+}
+
+function init(clientElements) {
+ // Initialize global variables and libraries.
+ var o3dElement = clientElements[0];
+ g_o3d = o3dElement.o3d;
+ g_math = o3djs.math;
+ g_client = o3dElement.client;
+
+ // Create a pack to manage our resources/assets
+ g_pack = g_client.createPack();
+
+ g_viewInfo = o3djs.rendergraph.createBasicView(
+ g_pack,
+ g_client.root,
+ g_client.renderGraphRoot);
+
+ // Set the background color to blue.
+ g_viewInfo.clearBuffer.clearColor = [0.5, 0.1, 1, 1];
+
+ // Setup an orthographic projection camera.
+ g_viewInfo.drawContext.projection = g_math.matrix4.orthographic(
+ 0 + 0.5,
+ g_client.width + 0.5,
+ g_client.height + 0.5,
+ 0 + 0.5,
+ 0.001,
+ 1000);
+
+ g_viewInfo.drawContext.view = g_math.matrix4.lookAt(
+ [0, 0, 1], // Eye.
+ [0, 0, 0], // Target.
+ [0, 1, 0]); // Up.
+
+ // Create an instance of the canvas utilities library.
+ var canvasLib = o3djs.canvas.create(g_pack, g_client.root, g_viewInfo);
+
+ // Create a canvas surface to draw on.
+ var canvasQuad = canvasLib.createXYQuad(50, 50, -1, 700, 500, false);
+
+ canvasQuad.canvas.clear([1, 1, 1, 1]);
+ canvasQuad.updateTexture();
+
+ var backgroundPaint = g_pack.createObject('CanvasPaint');
+ backgroundPaint.color = [1, 0.94, 0.94, 1];
+
+ var textPaint = g_pack.createObject('CanvasPaint');
+ textPaint.color = [0, 0, 0, 1];
+ textPaint.textSize = 24;
+
+ // Set drawTextBox to true to display the box showing the text extents
+ // returned by CanvasPaint.measureText()
+ var drawTextBox = false;
+
+ var typefaceArray = [ 'Arial', 'Arial Black', 'Comic Sans MS', 'Courier New',
+ 'Georgia', 'Impact', 'Palatino', 'Verdana',
+ 'Webdings' ];
+
+ var verticalPosition = 10;
+ var horizontalPosition = 50;
+ for (var ii = 0; ii < typefaceArray.length; ii++) {
+ textPaint.textTypeface = typefaceArray[ii];
+ var lineDimensions = textPaint.measureText(typefaceArray[ii]);
+
+
+ // Add enough vertical spacing to clear the height of the text.
+ verticalPosition += lineDimensions[3] - lineDimensions[1] + 20;
+
+ if (drawTextBox) {
+ // Add the text origin position.
+ textSize[0] += horizontalPosition;
+ textSize[1] += verticalPosition;
+ textSize[2] += horizontalPosition;
+ textSize[3] += verticalPosition;
+
+ canvasQuad.canvas.drawRect(lineDimensions[0],
+ lineDimensions[1],
+ lineDimensions[2],
+ lineDimensions[3],
+ backgroundPaint);
+ }
+
+ canvasQuad.canvas.drawText(typefaceArray[ii],
+ horizontalPosition,
+ verticalPosition,
+ textPaint);
+
+ }
+
+ var internationalText = [ 'ελληνικά', 'Српски' ];
+ textPaint.textTypeface = 'Arial';
+ horizontalPosition = 400;
+ verticalPosition = 10;
+ for (var ii = 0; ii < internationalText.length; ii++) {
+ var lineDimensions = textPaint.measureText(typefaceArray[ii]);
+
+ // Add enough vertical spacing to clear the height of the text.
+ verticalPosition += lineDimensions[3] - lineDimensions[1] + 20;
+
+ canvasQuad.canvas.drawText(internationalText[ii],
+ horizontalPosition,
+ verticalPosition,
+ textPaint);
+ }
+
+ // Update the o3d texture associated with the canvas quad object.
+ canvasQuad.updateTexture();
+
+ g_finished = true;
+}
+
+</script>
+</head>
+
+<body>
+<h1>O3D Canvas Sample: Fonts</h1>
+<br/>
+<!-- Start of O3D plugin -->
+<div id="o3d" style="width: 800px; height: 600px;"></div>
+<!-- End of O3D plugin -->
+</body>
+</html>
+
generated by cgit v1.1 at 2025-02-02 12:50:10 +0000