Add read support for m.file messages (#24)

include/FileItem.h

@@ -0,0 +1,97 @@
+/*
+ * 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/>.
+ */
+
+#pragma once
+
+#include <QEvent>
+#include <QIcon>
+#include <QMouseEvent>
+#include <QSharedPointer>
+#include <QWidget>
+
+#include "File.h"
+#include "MatrixClient.h"
+#include "MessageEvent.h"
+
+namespace events = matrix::events;
+namespace msgs   = matrix::events::messages;
+
+constexpr int MaxWidth           = 400;
+constexpr int Height             = 70;
+constexpr int IconRadius         = 22;
+constexpr int IconDiameter       = IconRadius * 2;
+constexpr int HorizontalPadding  = 12;
+constexpr int TextPadding        = 15;
+constexpr int DownloadIconRadius = IconRadius - 4;
+
+constexpr double VerticalPadding = Height - 2 * IconRadius;
+constexpr double IconYCenter     = Height / 2;
+constexpr double IconXCenter     = HorizontalPadding + IconRadius;
+
+class FileItem : public QWidget
+{
+        Q_OBJECT
+
+        Q_PROPERTY(QColor textColor WRITE setTextColor READ textColor)
+        Q_PROPERTY(QColor iconColor WRITE setIconColor READ iconColor)
+        Q_PROPERTY(QColor backgroundColor WRITE setBackgroundColor READ backgroundColor)
+
+public:
+        FileItem(QSharedPointer<MatrixClient> client,
+                 const events::MessageEvent<msgs::File> &event,
+                 QWidget *parent = nullptr);
+
+        FileItem(QSharedPointer<MatrixClient> client,
+                 const QString &url,
+                 const QString &filename,
+                 QWidget *parent = nullptr);
+
+        QSize sizeHint() const override;
+
+        void setTextColor(const QColor &color) { textColor_ = color; }
+        void setIconColor(const QColor &color) { iconColor_ = color; }
+        void setBackgroundColor(const QColor &color) { backgroundColor_ = color; }
+
+        QColor textColor() const { return textColor_; }
+        QColor iconColor() const { return iconColor_; }
+        QColor backgroundColor() const { return backgroundColor_; }
+
+protected:
+        void paintEvent(QPaintEvent *event) override;
+        void mousePressEvent(QMouseEvent *event) override;
+
+private slots:
+        void fileDownloaded(const QString &event_id, const QByteArray &data);
+
+private:
+        QString calculateFileSize(int nbytes) const;
+        void openUrl();
+
+        QUrl url_;
+        QString text_;
+        QString readableFileSize_;
+        QString filenameToSave_;
+
+        events::MessageEvent<msgs::File> event_;
+        QSharedPointer<MatrixClient> client_;
+
+        QIcon icon_;
+
+        QColor textColor_       = QColor("white");
+        QColor iconColor_       = QColor("#38A3D8");
+        QColor backgroundColor_ = QColor("#333");
+};

include/MatrixClient.h

@@ -53,6 +53,7 @@ public:
         void fetchUserAvatar(const QString &userId, const QUrl &avatarUrl);
         void fetchOwnAvatar(const QUrl &avatar_url);
         void downloadImage(const QString &event_id, const QUrl &url);
+        void downloadFile(const QString &event_id, const QUrl &url);
         void messages(const QString &room_id, const QString &from_token, int limit = 30) noexcept;
         void uploadImage(const QString &roomid, const QString &filename);
         void joinRoom(const QString &roomIdOrAlias);
@@ -96,6 +97,7 @@ signals:
         void userAvatarRetrieved(const QString &userId, const QImage &img);
         void ownAvatarRetrieved(const QPixmap &img);
         void imageDownloaded(const QString &event_id, const QPixmap &img);
+        void fileDownloaded(const QString &event_id, const QByteArray &data);
 
         // Returned profile data for the user's account.
         void getOwnProfileResponse(const QUrl &avatar_url, const QString &display_name);

include/TimelineItem.h

@@ -24,6 +24,7 @@
 #include <QStyleOption>
 
 #include "Emote.h"
+#include "File.h"
 #include "Image.h"
 #include "MessageEvent.h"
 #include "Notice.h"
@@ -31,6 +32,7 @@
 #include "Text.h"
 
 class ImageItem;
+class FileItem;
 class Avatar;
 
 namespace events = matrix::events;
@@ -64,6 +66,10 @@ public:
                      const events::MessageEvent<msgs::Image> &e,
                      bool with_sender,
                      QWidget *parent);
+        TimelineItem(FileItem *file,
+                     const events::MessageEvent<msgs::File> &e,
+                     bool with_sender,
+                     QWidget *parent);
 
         void setUserAvatar(const QImage &pixmap);
         DescInfo descriptionMessage() const { return descriptionMsg_; }

include/TimelineView.h

@@ -25,6 +25,7 @@
 #include <QStyleOption>
 
 #include "Emote.h"
+#include "File.h"
 #include "Image.h"
 #include "MessageEvent.h"
 #include "Notice.h"
@@ -95,6 +96,8 @@ public:
                                          bool with_sender);
         TimelineItem *createTimelineItem(const events::MessageEvent<msgs::Emote> &e,
                                          bool with_sender);
+        TimelineItem *createTimelineItem(const events::MessageEvent<msgs::File> &e,
+                                         bool with_sender);
 
         // Add new events at the end of the timeline.
         int addEvents(const Timeline &timeline);