added icons to effect controls

icons/icons.qrc

@@ -51,5 +51,10 @@
         <file>error.png</file>
         <file>dirup.png</file>
         <file>dirup-disabled.png</file>
+        <file>diamond.png</file>
+        <file>tri-down.png</file>
+        <file>tri-left.png</file>
+        <file>tri-right.png</file>
+        <file>tri-up.png</file>
     </qresource>
 </RCC>

project/effectrow.cpp

@@ -27,29 +27,35 @@ EffectRow::EffectRow(Effect *parent, bool save, QGridLayout *uilayout, const QSt
     ui->addWidget(label, row, 0);
 
     if (parent_effect->meta->type != EFFECT_TYPE_TRANSITION) {
-        QSize button_size(20, 20);
         QSize icon_size(12, 12);
+        QSize button_size(20, 20);
 
         key_controls = new QHBoxLayout();
         key_controls->setSpacing(0);
         key_controls->setMargin(0);
         key_controls->addStretch();
 
-        left_key_nav = new QPushButton("<");
-        left_key_nav->setVisible(false);
+        left_key_nav = new QPushButton();
+        left_key_nav->setIcon(QIcon(":/icons/tri-left.png"));
         left_key_nav->setMaximumSize(button_size);
+        left_key_nav->setIconSize(icon_size);
+        left_key_nav->setVisible(false);
         key_controls->addWidget(left_key_nav);
         connect(left_key_nav, SIGNAL(clicked(bool)), this, SLOT(goto_previous_key()));
 
-        key_addremove = new QPushButton(".");
-        key_addremove->setVisible(false);
+        key_addremove = new QPushButton();
+        key_addremove->setIcon(QIcon(":/icons/diamond.png"));
         key_addremove->setMaximumSize(button_size);
+        key_addremove->setIconSize(QSize(8, 8));
+        key_addremove->setVisible(false);
         key_controls->addWidget(key_addremove);
         connect(key_addremove, SIGNAL(clicked(bool)), this, SLOT(toggle_key()));
 
-        right_key_nav = new QPushButton(">");
-        right_key_nav->setVisible(false);
+        right_key_nav = new QPushButton();
+        right_key_nav->setIcon(QIcon(":/icons/tri-right.png"));
         right_key_nav->setMaximumSize(button_size);
+        right_key_nav->setIconSize(icon_size);
+        right_key_nav->setVisible(false);
         key_controls->addWidget(right_key_nav);
         connect(right_key_nav, SIGNAL(clicked(bool)), this, SLOT(goto_next_key()));
 

ui/collapsiblewidget.cpp

@@ -30,9 +30,9 @@ CollapsibleWidget::CollapsibleWidget(QWidget* parent) : QWidget(parent) {
 	enabled_check = new CheckboxEx();
 	enabled_check->setChecked(true);
 	header = new QLabel();
-	collapse_button = new QPushButton("[-]");
-	collapse_button->setStyleSheet("QPushButton { border: none; } QPushButton:hover { text-decoration: underline; }");
-	collapse_button->setMaximumWidth(25);
+    collapse_button = new QPushButton();
+    collapse_button->setIconSize(QSize(8, 8));
+    collapse_button->setStyleSheet("QPushButton { border: none; }");
 	setText("<untitled>");
     title_bar_layout->addWidget(collapse_button);
     title_bar_layout->addWidget(enabled_check);
@@ -42,6 +42,7 @@ CollapsibleWidget::CollapsibleWidget(QWidget* parent) : QWidget(parent) {
 
 	connect(title_bar, SIGNAL(select(bool, bool)), this, SLOT(header_click(bool, bool)));
 
+    set_button_icon(true);
 
 	contents = NULL;
 }
@@ -65,7 +66,11 @@ bool CollapsibleWidget::is_focused() {
 }
 
 bool CollapsibleWidget::is_expanded() {
-	return contents->isVisible();
+    return contents->isVisible();
+}
+
+void CollapsibleWidget::set_button_icon(bool open) {
+    collapse_button->setIcon(open ? QIcon(":/icons/tri-down.png") : QIcon(":/icons/tri-right.png"));
 }
 
 void CollapsibleWidget::setContents(QWidget* c) {
@@ -88,7 +93,7 @@ void CollapsibleWidget::on_enabled_change(bool b) {
 
 void CollapsibleWidget::on_visible_change() {
 	contents->setVisible(!contents->isVisible());
-	collapse_button->setText(contents->isVisible() ? "[-]" : "[+]");
+    set_button_icon(contents->isVisible());
 	emit visibleChanged();
 }
 

ui/collapsiblewidget.h

@@ -42,6 +42,7 @@ private:
 	QPushButton* collapse_button;
 	QFrame* line;
     QHBoxLayout* title_bar_layout;
+    void set_button_icon(bool open);
 
 signals:
     void deselect_others(QWidget*);