Miscellaneous small fixes (#1972)

* m_captureWindow->activateWindow(), raise()

Signed-off-by: Haris Gušić <harisgusic.dev@gmail.com>

* Revert "m_captureWindow->activateWindow(), raise()"

This reverts commit 36320aa38a9584864a5fab32a2ce4872ff5ad072.

* screen --number: indicate 0-indexation

Signed-off-by: Haris Gušić <harisgusic.dev@gmail.com>

* Fix color update bug

Also refactored SidePanelWidget sigslots related to color change.

Signed-off-by: Haris Gušić <harisgusic.dev@gmail.com>

* Stop creating empty flameshot.conf file

Signed-off-by: Haris Gušić <harisgusic.dev@gmail.com>

src/widgets/capture/capturewidget.cpp

@@ -184,7 +184,10 @@ CaptureWidget::CaptureWidget(uint id,
     connect(m_colorPicker,
             &ColorPicker::colorSelected,
             this,
-            &CaptureWidget::setDrawColor);
+            [this](const QColor& c) {
+                m_context.mousePos = mapFromGlobal(QCursor::pos());
+                setDrawColor(c);
+            });
     m_colorPicker->hide();
 
     // Init notification widget
@@ -950,7 +953,7 @@ void CaptureWidget::initPanel()
     connect(this,
             &CaptureWidget::colorChanged,
             m_sidePanel,
-            &SidePanelWidget::updateColor);
+            &SidePanelWidget::onColorChanged);
     connect(this,
             &CaptureWidget::thicknessChanged,
             m_sidePanel,
@@ -1150,6 +1153,8 @@ void CaptureWidget::setDrawColor(const QColor& c)
     if (m_context.color.isValid()) {
         ConfigHandler().setDrawColor(m_context.color);
         emit colorChanged(c);
+        // Update mouse preview
+        updateTool(activeButtonTool());
 
         // change color for the active tool
         auto toolItem = activeToolObject();