changed my mind, gonna implement the feed on qt instead of qml, first tries, nothing working yet

main.cpp

@@ -77,11 +77,6 @@ int main(int argc, char *argv[])
     
     new Shared::Global();        //translates enums
     
-    // QtQuickControls2 Style
-    if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE")) {
-        qputenv("QT_QUICK_CONTROLS_STYLE", "Material");
-    }
-    
     Squawk w;
     w.show();
     

resources/qml/feed.qml

@@ -1,79 +0,0 @@
-import QtQuick 2.14
-import QtQuick.Controls 2.14
-import QtQuick.Layouts 1.14
-
-ListView {
-    id: list
-    verticalLayoutDirection: ListView.BottomToTop
-    
-    required model
-    
-    delegate: RowLayout {
-        id: root
-        width: ListView.view.width
-        
-        // placeholder
-        Item {
-            Layout.preferredWidth: root.layoutDirection === Qt.LeftToRight ? 5 : 10
-        }
-        
-//         Avatar {
-//             id: avatar
-//             visible: !sentByMe
-//             avatarUrl: root.avatarUrl
-//             Layout.alignment: Qt.AlignHCenter | Qt.AlignTop
-//             name: root.senderName
-//             Layout.preferredHeight: Kirigami.Units.gridUnit * 2.2
-//             Layout.preferredWidth: Kirigami.Units.gridUnit * 2.2
-//         }
-        
-        Item {
-            Layout.preferredWidth: content.width + 16
-            Layout.preferredHeight: content.height + 16
-            
-            Rectangle {
-                id: messageBubble
-                anchors.fill: parent
-                
-                color: "blue"
-            }
-            
-            ColumnLayout {
-                id: content
-                spacing: 5
-                anchors.centerIn: parent
-                
-                Label {
-                    text: model.sender
-                }
-                
-                Label {
-                    text: model.text
-                    wrapMode: Text.Wrap
-                    Layout.maximumWidth: root.width
-                }
-                
-                // message meta data: date, deliveryState
-                RowLayout {
-                    Layout.bottomMargin: -4
-                    
-                    Label {
-                        id: dateLabel
-                        text: model.date
-                    }
-                    
-//                     Icon {
-//                         source: "edit-symbolic"
-//                         visible: model.correction
-//                         Layout.preferredHeight: 10
-//                         Layout.preferredWidth: 10
-//                     }
-                }
-            }
-        }
-        
-        Item {
-            Layout.fillWidth: true
-        }
-    }
-}

resources/resources.qrc

@@ -160,7 +160,5 @@
     <file>images/fallback/light/small/favorite.svg</file>
     <file>images/fallback/light/small/unfavorite.svg</file>
     <file>images/fallback/light/small/add.svg</file>
-    
-    <file>qml/feed.qml</file>
 </qresource>
 </RCC>

ui/CMakeLists.txt

@@ -39,6 +39,7 @@ set(squawkUI_SRC
   utils/progress.cpp
   utils/comboboxdelegate.cpp
   utils/dropshadoweffect.cpp
+  utils/feedview.cpp
 )
 
 # Tell CMake to create the helloworld executable

ui/models/messagefeed.cpp

@@ -85,6 +85,7 @@ QVariant MessageFeed::data(const QModelIndex& index, int role) const
         const Shared::Message* msg = *itr;
         
         switch (role) {
+            case Qt::DisplayRole:
             case Text: 
                 answer = msg->getBody();
                 break;
@@ -108,6 +109,7 @@ QVariant MessageFeed::data(const QModelIndex& index, int role) const
         }
     } else {
         switch (role) {
+            case Qt::DisplayRole:
             case Text: 
                 answer = "loading...";
                 break;

ui/utils/feedview.cpp

@@ -0,0 +1,125 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * 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/>.
+ */
+
+#include "feedview.h"
+
+#include <QPaintEvent>
+#include <QPainter>
+#include <QDebug>
+
+FeedView::FeedView(QWidget* parent):
+    QAbstractItemView(parent),
+    hints()
+{
+
+}
+
+FeedView::~FeedView()
+{
+}
+
+QModelIndex FeedView::indexAt(const QPoint& point) const
+{
+    return QModelIndex();
+}
+
+void FeedView::scrollTo(const QModelIndex& index, QAbstractItemView::ScrollHint hint)
+{
+}
+
+QRect FeedView::visualRect(const QModelIndex& index) const
+{
+    if (!index.isValid() || index.row() >= hints.size()) {
+        return QRect();
+    } else {
+        const Hint& hint = hints.at(index.row());
+        const QWidget* vp = viewport();
+        return QRect(0, vp->height() - hint.height - hint.offset, vp->width(), hint.height);
+    }
+}
+
+int FeedView::horizontalOffset() const
+{
+    return 0;
+}
+
+bool FeedView::isIndexHidden(const QModelIndex& index) const
+{
+    return true;
+}
+
+QModelIndex FeedView::moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
+{
+    return QModelIndex();
+}
+
+void FeedView::setSelection(const QRect& rect, QItemSelectionModel::SelectionFlags command)
+{
+}
+
+int FeedView::verticalOffset() const
+{
+    return 0;
+}
+
+QRegion FeedView::visualRegionForSelection(const QItemSelection& selection) const
+{
+    return QRegion();
+}
+
+void FeedView::rowsInserted(const QModelIndex& parent, int start, int end)
+{
+    scheduleDelayedItemsLayout();
+    QAbstractItemView::rowsInserted(parent, start, end);
+}
+
+void FeedView::updateGeometries()
+{
+    qDebug() << "updateGeometries";
+    QAbstractItemView::updateGeometries();
+    const QAbstractItemModel* m = model();
+    QStyleOptionViewItem option = viewOptions();
+    uint32_t previousOffset = 0;
+    
+    hints.clear();
+    for (int i = 0, size = m->rowCount(); i < size; ++i) {
+        QModelIndex index = m->index(i, 0, QModelIndex());
+        int height = itemDelegate(index)->sizeHint(option, index).height();
+        hints.emplace_back(Hint({
+            false,
+            previousOffset,
+            static_cast<uint32_t>(height)
+        }));
+        previousOffset += height;
+    }
+}
+
+void FeedView::paintEvent(QPaintEvent* event)
+{
+    qDebug() << "paint";
+    const QAbstractItemModel* m = model();
+    QRect zone = event->rect().translated(horizontalOffset(), -verticalOffset());
+    QPainter painter(viewport());
+    QStyleOptionViewItem option = viewOptions();
+    
+    for (int i = 0, size = m->rowCount(); i < size; ++i) {
+        QModelIndex index = m->index(i, 0, QModelIndex());
+        option.rect = visualRect(index);
+        itemDelegate(index)->paint(&painter, option, index);
+    }
+}

ui/utils/feedview.h

@@ -0,0 +1,65 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * 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 FEEDVIEW_H
+#define FEEDVIEW_H
+
+#include <QAbstractItemView>
+
+#include <deque>
+
+#include <ui/models/messagefeed.h>
+
+/**
+ * @todo write docs
+ */
+class FeedView : public QAbstractItemView
+{
+    Q_OBJECT
+public:
+    FeedView(QWidget* parent = nullptr);
+    ~FeedView();
+    
+    QModelIndex indexAt(const QPoint & point) const override;
+    void scrollTo(const QModelIndex & index, QAbstractItemView::ScrollHint hint) override;
+    QRect visualRect(const QModelIndex & index) const override;
+    bool isIndexHidden(const QModelIndex & index) const override;
+    QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override;
+    void setSelection(const QRect & rect, QItemSelectionModel::SelectionFlags command) override;
+    QRegion visualRegionForSelection(const QItemSelection & selection) const override;
+    
+protected slots:
+    void rowsInserted(const QModelIndex & parent, int start, int end) override;
+    
+protected:
+    int verticalOffset() const override;
+    int horizontalOffset() const override;
+    void paintEvent(QPaintEvent * event) override;
+    void updateGeometries() override;
+    
+private:
+    struct Hint {
+        bool dirty;
+        uint32_t offset;
+        uint32_t height;
+    };
+    std::deque<Hint> hints;
+    
+};
+
+#endif //FEEDVIEW_H

ui/widgets/CMakeLists.txt

@@ -7,7 +7,7 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 
 # Find the QtWidgets library
-find_package(Qt5Widgets CONFIG REQUIRED COMPONENTS Widgets Quick Qml QuickControls2 Core)
+find_package(Qt5Widgets CONFIG REQUIRED COMPONENTS Widgets Core)
 
 add_subdirectory(vcard)
 
@@ -26,7 +26,5 @@ add_library(squawkWidgets ${squawkWidgets_SRC})
 # Use the Widgets module from Qt 5.
 target_link_libraries(squawkWidgets vCardUI)
 target_link_libraries(squawkWidgets Qt5::Widgets)
-target_link_libraries(squawkWidgets Qt5::Qml)
-target_link_libraries(squawkWidgets Qt5::QuickControls2)
 
-qt5_use_modules(squawkWidgets Quick Qml QuickControls2 Core Widgets)
+qt5_use_modules(squawkWidgets Core Widgets)

ui/widgets/conversation.cpp

@@ -45,7 +45,7 @@ Conversation::Conversation(bool muc, Models::Account* acc, Models::Element* el,
     filesLayout(0),
     overlay(new QWidget()),
     filesToAttach(),
-    feed(new QQuickView()),
+    feed(new FeedView()),
     scroll(down),
     manualSliderChange(false),
     requestingHistory(false),
@@ -54,13 +54,8 @@ Conversation::Conversation(bool muc, Models::Account* acc, Models::Element* el,
 {
     m_ui->setupUi(this);
     
-    feed->setColor(QWidget::palette().color(QPalette::Base));
-    feed->setInitialProperties({{"model", QVariant::fromValue(el->feed)}});
-    feed->setResizeMode(QQuickView::SizeRootObjectToView);
-    feed->setSource(QUrl("qrc:/qml/feed.qml"));
-    QWidget *container = QWidget::createWindowContainer(feed, this);
-    container->setAutoFillBackground(false);
-    m_ui->widget->layout()->addWidget(container);
+    feed->setModel(el->feed);
+    m_ui->widget->layout()->addWidget(feed);
     
     connect(acc, &Models::Account::childChanged, this, &Conversation::onAccountChanged);
     

ui/widgets/conversation.h

@@ -24,7 +24,6 @@
 #include <QMap>
 #include <QMimeData>
 #include <QFileInfo>
-#include <QQuickView>
 
 #include "shared/message.h"
 #include "order.h"
@@ -34,6 +33,7 @@
 #include "ui/utils/resizer.h"
 #include "ui/utils/flowlayout.h"
 #include "ui/utils/badge.h"
+#include "ui/utils/feedview.h"
 #include "shared/icons.h"
 #include "shared/utils.h"
 
@@ -146,7 +146,7 @@ protected:
     FlowLayout* filesLayout;
     QWidget* overlay;
     W::Order<Badge*, Badge::Comparator> filesToAttach;
-    QQuickView* feed;
+    FeedView* feed;
     Scroll scroll;
     bool manualSliderChange;
     bool requestingHistory;