1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.ui; 18 19 import android.content.Context; 20 import android.graphics.Rect; 21 22 import com.android.gallery3d.R; 23 import com.android.gallery3d.glrenderer.FadeOutTexture; 24 import com.android.gallery3d.glrenderer.GLCanvas; 25 import com.android.gallery3d.glrenderer.NinePatchTexture; 26 import com.android.gallery3d.glrenderer.ResourceTexture; 27 import com.android.gallery3d.glrenderer.Texture; 28 29 public abstract class AbstractSlotRenderer implements SlotView.SlotRenderer { 30 31 private final ResourceTexture mVideoOverlay; 32 private final ResourceTexture mVideoPlayIcon; 33 private final ResourceTexture mPanoramaIcon; 34 private final NinePatchTexture mFramePressed; 35 private final NinePatchTexture mFrameSelected; 36 private FadeOutTexture mFramePressedUp; 37 AbstractSlotRenderer(Context context)38 protected AbstractSlotRenderer(Context context) { 39 mVideoOverlay = new ResourceTexture(context, R.drawable.ic_video_thumb); 40 mVideoPlayIcon = new ResourceTexture(context, R.drawable.ic_gallery_play); 41 mPanoramaIcon = new ResourceTexture(context, R.drawable.ic_360pano_holo_light); 42 mFramePressed = new NinePatchTexture(context, R.drawable.grid_pressed); 43 mFrameSelected = new NinePatchTexture(context, R.drawable.grid_selected); 44 } 45 drawContent(GLCanvas canvas, Texture content, int width, int height, int rotation)46 protected void drawContent(GLCanvas canvas, 47 Texture content, int width, int height, int rotation) { 48 canvas.save(GLCanvas.SAVE_FLAG_MATRIX); 49 50 // The content is always rendered in to the largest square that fits 51 // inside the slot, aligned to the top of the slot. 52 width = height = Math.min(width, height); 53 if (rotation != 0) { 54 canvas.translate(width / 2, height / 2); 55 canvas.rotate(rotation, 0, 0, 1); 56 canvas.translate(-width / 2, -height / 2); 57 } 58 59 // Fit the content into the box 60 float scale = Math.min( 61 (float) width / content.getWidth(), 62 (float) height / content.getHeight()); 63 canvas.scale(scale, scale, 1); 64 content.draw(canvas, 0, 0); 65 66 canvas.restore(); 67 } 68 drawVideoOverlay(GLCanvas canvas, int width, int height)69 protected void drawVideoOverlay(GLCanvas canvas, int width, int height) { 70 // Scale the video overlay to the height of the thumbnail and put it 71 // on the left side. 72 ResourceTexture v = mVideoOverlay; 73 float scale = (float) height / v.getHeight(); 74 int w = Math.round(scale * v.getWidth()); 75 int h = Math.round(scale * v.getHeight()); 76 v.draw(canvas, 0, 0, w, h); 77 78 int s = Math.min(width, height) / 6; 79 mVideoPlayIcon.draw(canvas, (width - s) / 2, (height - s) / 2, s, s); 80 } 81 drawPanoramaIcon(GLCanvas canvas, int width, int height)82 protected void drawPanoramaIcon(GLCanvas canvas, int width, int height) { 83 int iconSize = Math.min(width, height) / 6; 84 mPanoramaIcon.draw(canvas, (width - iconSize) / 2, (height - iconSize) / 2, 85 iconSize, iconSize); 86 } 87 isPressedUpFrameFinished()88 protected boolean isPressedUpFrameFinished() { 89 if (mFramePressedUp != null) { 90 if (mFramePressedUp.isAnimating()) { 91 return false; 92 } else { 93 mFramePressedUp = null; 94 } 95 } 96 return true; 97 } 98 drawPressedUpFrame(GLCanvas canvas, int width, int height)99 protected void drawPressedUpFrame(GLCanvas canvas, int width, int height) { 100 if (mFramePressedUp == null) { 101 mFramePressedUp = new FadeOutTexture(mFramePressed); 102 } 103 drawFrame(canvas, mFramePressed.getPaddings(), mFramePressedUp, 0, 0, width, height); 104 } 105 drawPressedFrame(GLCanvas canvas, int width, int height)106 protected void drawPressedFrame(GLCanvas canvas, int width, int height) { 107 drawFrame(canvas, mFramePressed.getPaddings(), mFramePressed, 0, 0, width, height); 108 } 109 drawSelectedFrame(GLCanvas canvas, int width, int height)110 protected void drawSelectedFrame(GLCanvas canvas, int width, int height) { 111 drawFrame(canvas, mFrameSelected.getPaddings(), mFrameSelected, 0, 0, width, height); 112 } 113 drawFrame(GLCanvas canvas, Rect padding, Texture frame, int x, int y, int width, int height)114 protected static void drawFrame(GLCanvas canvas, Rect padding, Texture frame, 115 int x, int y, int width, int height) { 116 frame.draw(canvas, x - padding.left, y - padding.top, width + padding.left + padding.right, 117 height + padding.top + padding.bottom); 118 } 119 } 120