mirror of
https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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308 lines
7.6 KiB
C#
308 lines
7.6 KiB
C#
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#region ================== Copyright (c) 2007 Pascal vd Heiden
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/*
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* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
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* This program is released under GNU General Public License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#endregion
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#region ================== Namespaces
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using System.Drawing;
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using System.Drawing.Imaging;
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using CodeImp.DoomBuilder.Rendering;
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using CodeImp.DoomBuilder.IO;
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using System.IO;
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using System.Drawing.Drawing2D;
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#endregion
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namespace CodeImp.DoomBuilder.Data
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{
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public class PreviewManager
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{
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#region ================== Constants
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// Image format
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private const PixelFormat IMAGE_FORMAT = PixelFormat.Format32bppArgb;
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// Dimensions of a single preview image
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internal const int IMAGE_WIDTH = 64;
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internal const int IMAGE_HEIGHT = 64;
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// How many previews on a single atlas?
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private const int PREVIEWS_X = 1;
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private const int PREVIEWS_Y = 1;
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#endregion
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#region ================== Variables
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// Atlases
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private List<Bitmap> atlases;
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// Next preview index
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private int nextpreviewindex;
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// Processing
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private Queue<ImageData> imageque;
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// Disposing
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private bool isdisposed = false;
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#endregion
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#region ================== Properties
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// Constants
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public int ImageWidth { get { return IMAGE_WIDTH; } }
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public int ImageHeight { get { return IMAGE_HEIGHT; } }
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// Disposing
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internal bool IsDisposed { get { return isdisposed; } }
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// Loading
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internal bool IsLoading
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{
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get
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{
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return (imageque.Count > 0);
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}
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}
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#endregion
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#region ================== Constructor / Disposer
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// Constructor
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internal PreviewManager()
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{
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// Initialize
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atlases = new List<Bitmap>();
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imageque = new Queue<ImageData>();
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nextpreviewindex = 0;
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// We have no destructor
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GC.SuppressFinalize(this);
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}
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// Disposer
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internal void Dispose()
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{
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// Not already disposed?
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if(!isdisposed)
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{
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// Clean up
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foreach(Bitmap b in atlases) b.Dispose();
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atlases = null;
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// Done
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isdisposed = true;
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}
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}
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#endregion
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#region ================== Private Methods
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// Returns atlas index for the given preview index
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private int GetAtlasIndex(int previewindex)
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{
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return previewindex / (PREVIEWS_X * PREVIEWS_Y);
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}
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// Returns local X index for the given preview index
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private int GetLocalXIndex(int previewindex)
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{
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int localindex = previewindex - GetAtlasIndex(previewindex) * (PREVIEWS_X * PREVIEWS_Y);
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return localindex % PREVIEWS_Y;
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}
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// Returns local Y index for the given preview index
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private int GetLocalYIndex(int previewindex)
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{
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int localindex = previewindex - GetAtlasIndex(previewindex) * (PREVIEWS_X * PREVIEWS_Y);
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return localindex / PREVIEWS_X;
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}
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// This makes a new atlas
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private void MakeNewAtlas()
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{
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lock(atlases)
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{
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Bitmap b = new Bitmap(IMAGE_WIDTH * PREVIEWS_X, IMAGE_HEIGHT * PREVIEWS_Y, IMAGE_FORMAT);
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Graphics g = Graphics.FromImage(b);
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g.Clear(Color.Transparent);
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g.Dispose();
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atlases.Add(b);
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}
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}
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// This makes a preview for the given image and updates the image settings
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private void MakeImagePreview(ImageData img)
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{
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Bitmap atlas;
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// Numbers
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int atlasindex = GetAtlasIndex(nextpreviewindex);
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int localx = GetLocalXIndex(nextpreviewindex);
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int localy = GetLocalYIndex(nextpreviewindex);
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lock(atlases)
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{
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// Do we have to make a new atlas?
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if(atlasindex > (atlases.Count - 1)) MakeNewAtlas();
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// Get the atlas we need
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atlas = atlases[atlasindex];
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}
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lock(img)
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{
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// Load image if needed
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if(!img.IsImageLoaded) img.LoadImage();
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lock(atlas)
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{
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// Draw image onto atlas
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Graphics g = Graphics.FromImage(atlas);
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g.PageUnit = GraphicsUnit.Pixel;
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g.CompositingQuality = CompositingQuality.HighQuality;
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g.InterpolationMode = InterpolationMode.HighQualityBicubic;
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g.SmoothingMode = SmoothingMode.HighQuality;
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g.PixelOffsetMode = PixelOffsetMode.None;
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Rectangle atlasrect = new Rectangle(localx * IMAGE_WIDTH, localy * IMAGE_HEIGHT, IMAGE_WIDTH, IMAGE_HEIGHT);
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RectangleF imgrect = General.MakeZoomedRect(new Size(img.Width, img.Height), atlasrect);
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g.DrawImage(img.Bitmap, imgrect);
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g.Dispose();
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}
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// Unload image if no longer needed
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if(!img.IsReferenced) img.UnloadImage();
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// Set numbers
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img.PreviewIndex = nextpreviewindex;
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img.PreviewState = ImageLoadState.Ready;
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nextpreviewindex++;
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}
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}
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#endregion
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#region ================== Public Methods
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// This draws a preview centered in a target
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internal void DrawPreview(int previewindex, Graphics target, Point targetpos)
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{
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Bitmap atlas;
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// Get the atlas we need
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lock(atlases) { atlas = atlases[GetAtlasIndex(previewindex)]; }
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// Draw from atlas to target
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lock(atlas)
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{
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if((PREVIEWS_X == 1) && (PREVIEWS_Y == 1))
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{
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target.DrawImageUnscaled(atlas, targetpos.X, targetpos.Y);
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}
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else
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{
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RectangleF trect = new RectangleF((float)targetpos.X, (float)targetpos.Y,
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(float)IMAGE_WIDTH, (float)IMAGE_HEIGHT);
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RectangleF srect = new RectangleF((float)GetLocalXIndex(previewindex) * IMAGE_WIDTH,
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(float)GetLocalYIndex(previewindex) * IMAGE_HEIGHT,
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(float)IMAGE_WIDTH, (float)IMAGE_HEIGHT);
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target.DrawImage(atlas, trect, srect, GraphicsUnit.Pixel);
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}
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}
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}
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// This draws a preview centered in a target
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internal void DrawPreviewCentered(int previewindex, Graphics target, Rectangle targetview)
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{
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Bitmap atlas;
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// Get the atlas we need
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lock(atlases) { atlas = atlases[GetAtlasIndex(previewindex)]; }
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// Draw from atlas to target
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lock(atlas)
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{
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RectangleF trect = General.MakeZoomedRect(new Size(64, 64), targetview);
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RectangleF srect = new RectangleF((float)GetLocalXIndex(previewindex) * IMAGE_WIDTH,
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(float)GetLocalYIndex(previewindex) * IMAGE_HEIGHT,
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(float)IMAGE_WIDTH, (float)IMAGE_HEIGHT);
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target.DrawImage(atlas, trect, srect, GraphicsUnit.Pixel);
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}
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}
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// Background loading
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// Return true when we have more work to do, so that the
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// thread will not wait too long before calling again
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internal bool BackgroundLoad()
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{
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// Get next item
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ImageData image = null;
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lock(imageque)
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{
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// Fetch next image to process
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if(imageque.Count > 0) image = imageque.Dequeue();
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}
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// Any image to process?
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if(image != null)
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{
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// Make image preview?
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if(!image.IsPreviewLoaded) MakeImagePreview(image);
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}
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return (image != null);
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}
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// This adds an image for preview creation
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internal void AddImage(ImageData image)
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{
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lock(imageque)
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{
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// Add to list
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image.PreviewState = ImageLoadState.Loading;
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imageque.Enqueue(image);
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}
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}
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#if DEBUG
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internal void DumpAtlases()
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{
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lock(atlases)
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{
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int index = 0;
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foreach(Bitmap a in atlases)
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{
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lock(a)
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{
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string file = Path.Combine(General.AppPath, "atlas" + index++ + ".png");
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a.Save(file, ImageFormat.Png);
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}
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}
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}
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}
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#endif
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#endregion
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}
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}
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