Add initial support for inline images

include/ImageItem.h

@@ -0,0 +1,73 @@
+/*
+ * nheko Copyright (C) 2017  Konstantinos Sideris <siderisk@auth.gr>
+ *
+ * This program 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.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TIMELINE_IMAGE_ITEM_H
+#define TIMELINE_IMAGE_ITEM_H
+
+#include <QEvent>
+#include <QMouseEvent>
+#include <QSharedPointer>
+#include <QWidget>
+
+#include "MatrixClient.h"
+
+class ImageItem : public QWidget
+{
+	Q_OBJECT
+public:
+	ImageItem(QSharedPointer<MatrixClient> client,
+		  const Event &event,
+		  const QString &body,
+		  const QUrl &url,
+		  QWidget *parent = nullptr);
+
+	void setImage(const QPixmap &image);
+
+	QSize sizeHint() const override;
+
+protected:
+	void paintEvent(QPaintEvent *event) override;
+	void mousePressEvent(QMouseEvent *event) override;
+	void resizeEvent(QResizeEvent *event) override;
+
+private slots:
+	void imageDownloaded(const QString &event_id, const QPixmap &img);
+
+private:
+	void scaleImage();
+	void openUrl();
+
+	int max_width_ = 500;
+	int max_height_ = 300;
+
+	int width_;
+	int height_;
+
+	QPixmap scaled_image_;
+	QPixmap image_;
+
+	QUrl url_;
+	QString text_;
+
+	int bottom_height_ = 30;
+
+	Event event_;
+
+	QSharedPointer<MatrixClient> client_;
+};
+
+#endif  // TIMELINE_IMAGE_ITEM_H

include/MatrixClient.h

@@ -42,6 +42,7 @@ public:
 	void versions() noexcept;
 	void fetchRoomAvatar(const QString &roomid, const QUrl &avatar_url);
 	void fetchOwnAvatar(const QUrl &avatar_url);
+	void downloadImage(const QString &event_id, const QUrl &url);
 
 	inline QString getHomeServer();
 	inline int transactionId();
@@ -68,6 +69,7 @@ signals:
 
 	void roomAvatarRetrieved(const QString &roomid, const QPixmap &img);
 	void ownAvatarRetrieved(const QPixmap &img);
+	void imageDownloaded(const QString &event_id, const QPixmap &img);
 
 	// Returned profile data for the user's account.
 	void getOwnProfileResponse(const QUrl &avatar_url, const QString &display_name);
@@ -84,6 +86,7 @@ private:
 		GetOwnProfile,
 		GetOwnAvatar,
 		GetProfile,
+		Image,
 		InitialSync,
 		Login,
 		Logout,
@@ -105,6 +108,7 @@ private:
 	void onInitialSyncResponse(QNetworkReply *reply);
 	void onSyncResponse(QNetworkReply *reply);
 	void onRoomAvatarResponse(QNetworkReply *reply);
+	void onImageResponse(QNetworkReply *reply);
 
 	// Client API prefix.
 	QString api_url_;

include/TimelineItem.h

@@ -23,6 +23,7 @@
 #include <QWidget>
 
 #include "Sync.h"
+#include "ImageItem.h"
 
 class TimelineItem : public QWidget
 {
@@ -35,6 +36,10 @@ public:
 	TimelineItem(const QString &userid, const QString &color, const QString &body, QWidget *parent = 0);
 	TimelineItem(const QString &body, QWidget *parent = 0);
 
+	// For inline images.
+	TimelineItem(ImageItem *image, const Event &event, const QString &color, QWidget *parent);
+	TimelineItem(ImageItem *image, const Event &event, QWidget *parent);
+
 	~TimelineItem();
 
 private:

include/TimelineView.h

@@ -49,11 +49,13 @@ class TimelineView : public QWidget
 	Q_OBJECT
 
 public:
-	explicit TimelineView(QWidget *parent = 0);
-	explicit TimelineView(const QList<Event> &events, QWidget *parent = 0);
+	TimelineView(QSharedPointer<MatrixClient> client, QWidget *parent = 0);
+	TimelineView(const QList<Event> &events, QSharedPointer<MatrixClient> client, QWidget *parent = 0);
 	~TimelineView();
 
+	// FIXME: Reduce the parameters
 	void addHistoryItem(const Event &event, const QString &color, bool with_sender);
+	void addImageItem(const QString &body, const QUrl &url, const Event &event, const QString &color, bool with_sender);
 	int addEvents(const QList<Event> &events);
 	void addUserTextMessage(const QString &msg, int txn_id);
 	void updatePendingMessage(int txn_id, QString event_id);
@@ -76,6 +78,7 @@ private:
 	QString last_sender_;
 
 	QList<PendingMessage> pending_msgs_;
+	QSharedPointer<MatrixClient> client_;
 };
 
 #endif  // HISTORY_VIEW_H