From 47561fdd6e67ab1918acf8f44ed54759bdf467a7 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 22 Feb 2011 15:41:12 +0000
Subject: Make collapser use QPixmap during animation.

---
 client/collapser.cc   | 71 ++++++++++++++++++++++++++++++++++-----------------
 client/collapser.h    | 13 ++++++++++
 client/macrowindow.cc |  9 ++++---
 3 files changed, 66 insertions(+), 27 deletions(-)

diff --git a/client/collapser.cc b/client/collapser.cc
index cbbd84e..a00dcff 100644
--- a/client/collapser.cc
+++ b/client/collapser.cc
@@ -27,8 +27,11 @@
 #include "collapser.h"
 #include <QApplication>
 #include <QHBoxLayout>
+#include <QPainter>
 
-#define ANIM_TIME 100
+#include "debug.h"
+
+#define ANIM_TIME 250
 #define ANIM_INTERVAL 20
 
 Collapser::Collapser(QWidget *collapsed, QWidget *expanded, bool setcollapsed,
@@ -61,12 +64,6 @@ void Collapser::setWidgets(QWidget *collapsed, QWidget *expanded)
 
 void Collapser::setCollapsedWidget(QWidget *collapsed)
 {
-  /*
-  if(this->collapsed) {
-    delete this->collapsed;
-    this->collapsed = NULL;
-  }
-  */
   this->collapsed = collapsed;
 
   if(isCollapsed() == true && collapsed) {
@@ -77,12 +74,6 @@ void Collapser::setCollapsedWidget(QWidget *collapsed)
 
 void Collapser::setExpandedWidget(QWidget *expanded)
 {
-  /*
-  if(this->expanded) {
-    delete this->expanded;
-    this->expanded = NULL;
-  }
-  */
   this->expanded = expanded;
 
   if(isCollapsed() == false && expanded) {
@@ -123,6 +114,15 @@ void Collapser::collapse()
 
   is_collapsed = true;
   timer->start();
+
+  if(expanded) {
+    expanded->setVisible(false);
+    layout()->removeWidget(expanded);
+  }
+
+  layout()->addWidget(&placeholder);
+  placeholder.setVisible(true);
+  if(expanded) placeholder.grab(expanded);
 }
 
 void Collapser::expand()
@@ -134,12 +134,15 @@ void Collapser::expand()
   // show expanded
   if(collapsed) {
     collapsed->setVisible(false);
-    qApp->processEvents(); // Make sure it is actualle invisble before removing it form the layout.
+    //    qApp->processEvents(); // Make sure it is actually invisble before removing it form the layout.
     layout()->removeWidget(collapsed);
   }
   if(expanded) {
-    layout()->addWidget(expanded);
-    expanded->setVisible(true);
+    layout()->addWidget(&placeholder);
+    placeholder.setVisible(true);
+    placeholder.grab(expanded);
+    //    layout()->addWidget(expanded);
+    //    expanded->setVisible(true);
   }
   
   is_collapsed = false;
@@ -186,15 +189,13 @@ void Collapser::anim()
 
     if(is_collapsed) {
       // show collapsed
-      if(expanded) {
-        expanded->setVisible(false);
-        // Make sure it is actualle invisible before removing it from the 
-        // layout.
-        qApp->processEvents();
-        layout()->removeWidget(expanded);
-      }
+
+      placeholder.setVisible(false);
+      layout()->removeWidget(&placeholder);
+
       if(collapsed) {
         layout()->addWidget(collapsed);
+        collapsed->setFixedHeight(c_height);
         collapsed->setVisible(true);
       }
 
@@ -205,6 +206,13 @@ void Collapser::anim()
     } else {
       setFixedHeight(e_height);
 
+      placeholder.setVisible(false);
+      layout()->removeWidget(&placeholder);
+      if(expanded) {
+        layout()->addWidget(expanded);
+        expanded->setVisible(true);
+      }
+
       emit doneExpanding();
 
       if(scrollarea && expanded) {
@@ -215,3 +223,20 @@ void Collapser::anim()
 
   }
 }
+
+void Collapser::Placeholder::paintEvent(QPaintEvent *)
+{
+  QPainter p(this);
+  p.drawPixmap(rect(), pixmap, pixmap.rect());
+}
+
+void Collapser::Placeholder::grab(QWidget *w)
+{
+  if(!w) return;
+  //  w->setFixedWidth(contentsRect().width());
+  QSize sz = w->minimumSizeHint();
+  //  w->setFixedHeight(sz.height());
+  DEBUG(collapser, "WIDTH: %d\n", width());
+  w->resize(width(), sz.height());
+  pixmap = QPixmap::grabWidget(w, 0, 0);
+}
diff --git a/client/collapser.h b/client/collapser.h
index 8b38359..2b1ad3c 100644
--- a/client/collapser.h
+++ b/client/collapser.h
@@ -30,7 +30,9 @@
 #include <QWidget>
 #include <QTime>
 #include <QTimer>
+
 #include <QScrollArea>
+#include <QPixmap>
 
 class Collapser : public QWidget {
 Q_OBJECT
@@ -65,6 +67,17 @@ protected:
   //  void timerEvent(QTimerEvent *);
 
 private:
+  class Placeholder : public QWidget {
+  public:
+    QPixmap pixmap;
+    void grab(QWidget *w);
+
+  protected:
+    void paintEvent(QPaintEvent*);
+  };
+
+  Placeholder placeholder;
+
   QWidget *collapsed;
   QWidget *expanded;
 
diff --git a/client/macrowindow.cc b/client/macrowindow.cc
index 481ee0c..04cc2cb 100644
--- a/client/macrowindow.cc
+++ b/client/macrowindow.cc
@@ -233,13 +233,14 @@ void MacroWindow::expandWrapper()
       }
     }
   }
-  if(mainwidget) setExpandedWidget(mainwidget->qwidget());
-  expand();
 
-  // Set values here, to be sure that the widgets are visible and thereby
-  //  validate correctly.
+  // Set values here, to be sure that the widgets are visible to the value
+  // system and thereby validate correctly.
   if(mainwidget) mainwidget->setValues();
 
+  if(mainwidget) setExpandedWidget(mainwidget->qwidget());
+  expand();
+
   // Set keyboard focus on the first focusable widget in the macro.
   QVector< Widget* > widgets;
   if(mainwidget) widgets = mainwidget->widgetList(true);
-- 
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