initial commit for 0.4.18 version of Telegram Desktop

Telegram/SourceFiles/gui/images.h

@@ -0,0 +1,168 @@
+/*
+This file is part of Telegram Desktop,
+an unofficial desktop messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014 John Preston, https://tdesktop.com
+*/
+#pragma once
+
+#include <QtGui/QPixmap>
+
+class Image {
+public:
+
+	Image(QByteArray format = "PNG") : forgot(false), format(format) {
+	}
+	virtual bool loaded() const {
+		return true;
+	}
+	const QPixmap &pix(int32 w = 0, int32 h = 0) const;
+	QPixmap pixNoCache(int32 w = 0, int32 h = 0, bool smooth = false) const;
+
+	virtual int32 width() const = 0;
+	virtual int32 height() const = 0;
+
+	virtual void load(bool loadFirst = false, bool prior = true) {
+	}
+
+	virtual void checkload() const {
+	}
+
+	bool isNull() const;
+	
+	void forget() const;
+	void restore() const;
+
+	virtual ~Image() {
+		invalidateSizeCache();
+	}
+
+protected:
+
+	virtual const QPixmap &pixData() const = 0;
+	virtual void doForget() const = 0;
+	virtual void doRestore() const = 0;
+
+	void invalidateSizeCache() const;
+
+	mutable QByteArray saved, format;
+	mutable bool forgot;
+
+private:
+
+	typedef QMap<uint64, QPixmap> Sizes;
+	mutable Sizes _sizesCache;
+
+};
+
+class LocalImage : public Image {
+public:
+
+	LocalImage(const QString &file);
+	LocalImage(const QPixmap &pixmap, QByteArray format);
+	
+	int32 width() const;
+	int32 height() const;
+
+	~LocalImage();
+
+protected:
+
+	const QPixmap &pixData() const;
+	void doForget() const {
+		data = QPixmap();
+	}
+	void doRestore() const { 
+		QBuffer buffer(&saved);
+		QImageReader reader(&buffer, format);
+		data = QPixmap::fromImageReader(&reader, Qt::ColorOnly);
+	}
+
+private:
+
+	mutable QPixmap data;
+};
+
+LocalImage *getImage(const QString &file);
+LocalImage *getImage(const QPixmap &pixmap, QByteArray format);
+
+class StorageImage : public Image {
+public:
+
+	StorageImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret);
+	StorageImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, QByteArray &bytes);
+	
+	int32 width() const;
+	int32 height() const;
+	bool loaded() const;
+	void setData(QByteArray &bytes, const QByteArray &format = "JPG");
+
+	void load(bool loadFirst = false, bool prior = true) {
+		if (loader) {
+			loader->start(loadFirst, prior);
+			check();
+		}
+	}
+	void checkload() const {
+		if (loader) {
+			if (!loader->loading()) {
+				loader->start(true);
+			}
+			check();
+		}
+	}
+
+	~StorageImage();
+
+protected:
+
+	const QPixmap &pixData() const;
+	bool check() const;
+	void doForget() const {
+		data = QPixmap();
+	}
+	void doRestore() const { 
+		QBuffer buffer(&saved);
+		QImageReader reader(&buffer, format);
+		data = QPixmap::fromImageReader(&reader, Qt::ColorOnly);
+	}
+
+private:
+
+	mutable QPixmap data;
+	mutable int32 w, h;
+	mutable mtpFileLoader *loader;
+};
+
+StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret);
+StorageImage *getImage(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, const QByteArray &bytes);
+Image *getImage(int32 width, int32 height, const MTPFileLocation &location);
+
+class ImagePtr : public ManagedPtr<Image> {
+public:
+	ImagePtr();
+	ImagePtr(const QString &file) : Parent(getImage(file)) {
+	}
+	ImagePtr(const QPixmap &pixmap, QByteArray format) : Parent(getImage(pixmap, format)) {
+	}
+	ImagePtr(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret) : Parent(getImage(width, height, dc, volume, local, secret)) {
+	}
+	ImagePtr(int32 width, int32 height, int32 dc, const int64 &volume, int32 local, const int64 &secret, const QByteArray &bytes) : Parent(getImage(width, height, dc, volume, local, secret, bytes)) {
+	}
+	ImagePtr(int32 width, int32 height, const MTPFileLocation &location, ImagePtr def = ImagePtr());
+};
+
+void clearStorageImages();
+void clearAllImages();
+int64 imageCacheSize();