Qt: Add option to pause on minimizing window (closes #1379)

CHANGES

@@ -55,6 +55,7 @@ Misc:
  - Vita: L2/R2 and L3/R3 can now be mapped on PSTV (fixes mgba.io/i/1292)
  - mGUI: Remember name and position of last loaded game
  - Core: Create game-related paths if they don't exist (fixes mgba.io/i/1446)
+ - Qt: Add option to pause on minimizing window (closes mgba.io/i/1379)
 
 0.7.2: (2019-05-25)
 Emulation fixes:

src/platform/qt/SettingsView.cpp

@@ -387,6 +387,7 @@ void SettingsView::updateConfig() {
 	saveSetting("allowOpposingDirections", m_ui.allowOpposingDirections);
 	saveSetting("suspendScreensaver", m_ui.suspendScreensaver);
 	saveSetting("pauseOnFocusLost", m_ui.pauseOnFocusLost);
+	saveSetting("pauseOnMinimize", m_ui.pauseOnMinimize);
 	saveSetting("savegamePath", m_ui.savegamePath);
 	saveSetting("savestatePath", m_ui.savestatePath);
 	saveSetting("screenshotPath", m_ui.screenshotPath);
@@ -550,6 +551,7 @@ void SettingsView::reloadConfig() {
 	loadSetting("allowOpposingDirections", m_ui.allowOpposingDirections);
 	loadSetting("suspendScreensaver", m_ui.suspendScreensaver);
 	loadSetting("pauseOnFocusLost", m_ui.pauseOnFocusLost);
+	loadSetting("pauseOnMinimize", m_ui.pauseOnMinimize);
 	loadSetting("savegamePath", m_ui.savegamePath);
 	loadSetting("savestatePath", m_ui.savestatePath);
 	loadSetting("screenshotPath", m_ui.screenshotPath);

src/platform/qt/SettingsView.ui

@@ -562,7 +562,7 @@
          </property>
         </widget>
        </item>
-       <item row="9" column="1">
+       <item row="10" column="1">
         <widget class="QCheckBox" name="showFps">
          <property name="text">
           <string>Show FPS in title bar</string>
@@ -572,21 +572,21 @@
          </property>
         </widget>
        </item>
-       <item row="11" column="0" colspan="2">
+       <item row="12" column="0" colspan="2">
         <widget class="Line" name="line_13">
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
         </widget>
        </item>
-       <item row="14" column="0" colspan="2">
+       <item row="15" column="0" colspan="2">
         <widget class="Line" name="line_16">
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
         </widget>
        </item>
-       <item row="15" column="1">
+       <item row="16" column="1">
         <widget class="QCheckBox" name="cheatAutosave">
          <property name="text">
           <string>Automatically save cheats</string>
@@ -596,7 +596,7 @@
          </property>
         </widget>
        </item>
-       <item row="16" column="1">
+       <item row="17" column="1">
         <widget class="QCheckBox" name="cheatAutoload">
          <property name="text">
           <string>Automatically load cheats</string>
@@ -606,7 +606,7 @@
          </property>
         </widget>
        </item>
-       <item row="12" column="1">
+       <item row="13" column="1">
         <widget class="QCheckBox" name="autosave">
          <property name="text">
           <string>Automatically save state</string>
@@ -616,7 +616,7 @@
          </property>
         </widget>
        </item>
-       <item row="13" column="1">
+       <item row="14" column="1">
         <widget class="QCheckBox" name="autoload">
          <property name="text">
           <string>Automatically load state</string>
@@ -626,13 +626,20 @@
          </property>
         </widget>
        </item>
-       <item row="10" column="1">
+       <item row="11" column="1">
         <widget class="QCheckBox" name="useDiscordPresence">
          <property name="text">
           <string>Enable Discord Rich Presence</string>
          </property>
         </widget>
        </item>
+       <item row="9" column="1">
+        <widget class="QCheckBox" name="pauseOnMinimize">
+         <property name="text">
+          <string>Pause when minimized</string>
+         </property>
+        </widget>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="emulation">

src/platform/qt/Window.cpp

@@ -602,6 +602,13 @@ void Window::resizeEvent(QResizeEvent* event) {
 
 void Window::showEvent(QShowEvent* event) {
 	if (m_wasOpened) {
+		if (event->spontaneous() && m_config->getOption("pauseOnMinimize").toInt() && m_controller) {
+			focusCheck();
+			if (m_autoresume) {
+				m_controller->setPaused(false);
+				m_autoresume = false;
+			}
+		}
 		return;
 	}
 	m_wasOpened = true;
@@ -623,6 +630,19 @@ void Window::showEvent(QShowEvent* event) {
 	setFocus();
 }
 
+void Window::hideEvent(QHideEvent* event) {
+	if (!event->spontaneous()) {
+		return;
+	}
+	if (!m_config->getOption("pauseOnMinimize").toInt() || !m_controller) {
+		return;
+	}
+	if (!m_controller->isPaused()) {
+		m_autoresume = true;
+		m_controller->setPaused(true);
+	}
+}
+
 void Window::closeEvent(QCloseEvent* event) {
 	emit shutdown();
 	m_config->setQtOption("windowPos", pos());

src/platform/qt/Window.h

@@ -116,6 +116,7 @@ protected:
 	virtual void keyReleaseEvent(QKeyEvent* event) override;
 	virtual void resizeEvent(QResizeEvent*) override;
 	virtual void showEvent(QShowEvent*) override;
+	virtual void hideEvent(QHideEvent*) override;
 	virtual void closeEvent(QCloseEvent*) override;
 	virtual void focusInEvent(QFocusEvent*) override;
 	virtual void focusOutEvent(QFocusEvent*) override;