Dragging the timeline will now scroll audio display.

Originally committed to SVN as r214.

core/audio_display.cpp

@@ -74,6 +74,7 @@ AudioDisplay::AudioDisplay(wxWindow *parent,VideoDisplay *display)
 	blockUpdate = false;
 	dontReadTimes = false;
 	holding = false;
+	draggingScale = false;
 	Position = 0;
 	PositionSample = 0;
 	oldCurPos = 0;
@@ -1154,11 +1155,15 @@ void AudioDisplay::OnMouseEvent(wxMouseEvent& event) {
 
 	// Is inside?
 	bool inside = false;
-	if (x >= 0 && y >= 0 && x < w && y < h) {
-		inside = true;
+	bool onScale = false;
+	if (x >= 0 && y >= 0 && x < w) {
+		if (y < h) {
+			inside = true;
 
-		// Get focus
-		if (wxWindow::FindFocus() != this && Options.AsBool(_T("Audio Autofocus"))) SetFocus();
+			// Get focus
+			if (wxWindow::FindFocus() != this && Options.AsBool(_T("Audio Autofocus"))) SetFocus();
+		}
+		else if (y < h+20) onScale = true;
 	}
 
 	// Click type
@@ -1242,6 +1247,23 @@ void AudioDisplay::OnMouseEvent(wxMouseEvent& event) {
 		dc.EndDrawing();
 	}
 
+	// Scale dragging
+	if (onScale || draggingScale) {
+		if (event.ButtonDown(wxMOUSE_BTN_LEFT)) {
+			lastDragX = x;
+			draggingScale = true;
+		}
+		else if (holding) {
+			int delta = lastDragX - x;
+			lastDragX = x;
+			UpdatePosition(Position + delta);
+			UpdateImage();
+			Refresh(false);
+		}
+		else draggingScale = false;
+	}
+
+	// Outside
 	if (!inside) return;
 
 	// Left/middle click

core/audio_display.h

@@ -79,6 +79,7 @@ private:
 	bool hasKaraoke;
 	bool diagUpdated;
 	bool holding;
+	bool draggingScale;
 	__int64 selStart;
 	__int64 selEnd;
 	__int64 lineStart;
@@ -87,6 +88,7 @@ private:
 	__int64 selEndCap;
 	int hold;
 	int lastX;
+	int lastDragX;
 	int curStartMS;
 	int curEndMS;
 	int holdSyl;

core/changelog.txt

@@ -65,6 +65,7 @@ Please visit http://aegisub.net to download latest version
 - Audio current play position cursor will now always be visible. (AMZ)
 - Removed video frame/subtitles time sync controls from the grid context menu. (AMZ)
 - Timeline is now drawn below audio display. (AMZ)
+- Dragging the timeline will now scroll audio display. (AMZ)
 
 
 = 1.09 beta - 2006.01.16 ===========================