Add zoom options

English.lproj/MainMenu.nib/classes.nib

@@ -1,6 +1,17 @@
 {
     IBClasses = (
-        {CLASS = FirstResponder; LANGUAGE = ObjC; SUPERCLASS = NSObject; }, 
+        {
+            ACTIONS = {
+                zoomIn = id; 
+                zoomOut = id; 
+                zoomToActualSize = id; 
+                zoomToFit = id; 
+                zoomToFitWidth = id; 
+            }; 
+            CLASS = FirstResponder; 
+            LANGUAGE = ObjC; 
+            SUPERCLASS = NSObject; 
+        }, 
         {
             ACTIONS = {playNewPitch = id; selectLilypondPath = id; }; 
             CLASS = VLAppController; 

English.lproj/MainMenu.nib/info.nib

@@ -7,16 +7,16 @@
 	<key>IBEditorPositions</key>
 	<dict>
 		<key>29</key>
-		<string>214 402 301 44 0 0 1024 746 </string>
+		<string>232 309 349 44 0 0 1024 746 </string>
 	</dict>
 	<key>IBFramework Version</key>
 	<string>453.0</string>
 	<key>IBOpenObjects</key>
 	<array>
-		<integer>29</integer>
 		<integer>217</integer>
+		<integer>29</integer>
 	</array>
 	<key>IBSystem Version</key>
-	<string>9A294</string>
+	<string>9A300</string>
 </dict>
 </plist>

Sources/VLPDFView.mm

@@ -8,6 +8,8 @@
 
 #import "VLPDFView.h"
 
+#include <algorithm>
+
 @implementation VLPDFView
 
 - (BOOL)tryOpenURL:(NSURL *)url
@@ -35,4 +37,41 @@
 	return YES;
 }
 
+- (IBAction) displaySinglePage: (id) sender
+{
+	// Display single page mode.
+	if ([self displayMode] > kPDFDisplaySinglePageContinuous)
+		[self setDisplayMode: [self displayMode] - 2];
+}
+
+- (IBAction) displayTwoUp: (id) sender
+{
+	// Display two-up.
+	if ([self displayMode] < kPDFDisplayTwoUp)
+		[self setDisplayMode: [self displayMode] + 2];
+}
+
+- (IBAction) zoomToFit: (id) sender
+{
+	NSSize sz 	=  [self frame].size;
+	NSSize frame=  [[self documentView] frame].size;
+	
+	float scale =  std::min(sz.width / frame.width, sz.height / frame.height);
+	
+	[self setScaleFactor: scale];
+}
+
+- (IBAction) zoomToFitWidth: (id) sender
+{
+	NSSize sz 	=  [self frame].size;
+	NSSize frame=  [[self documentView] frame].size;
+	
+	[self setScaleFactor: sz.width / frame.width];
+}
+
+- (IBAction) zoomToActualSize: (id) sender
+{
+	[self setScaleFactor: 1.0];
+}
+
 @end

Sources/VLSheetView.mm

@@ -254,8 +254,8 @@ VLMusicElement sSemi2Accidental[12][12] = {
 	NSScrollView * scroll = [self enclosingScrollView];
 
 	NSSize sz 	=  [scroll contentSize];
-	sz.width   /=	fDisplayScale;
-	sz.height  /= 	fDisplayScale;
+	sz.width   *=	fDisplayScale;
+	sz.height  *= 	fDisplayScale;
 
 	const VLSong * 			song = [self song];
 	const VLProperties & 	prop = song->fProperties.front();
@@ -269,10 +269,10 @@ VLMusicElement sSemi2Accidental[12][12] = {
 	fNumSystems 	= (song->CountMeasures()+fMeasPerSystem-1)/fMeasPerSystem;
 	sz.height		= fNumSystems*kSystemH;
 
-	NSSize frameSz	= {sz.width * fDisplayScale, sz.height * fDisplayScale};
+	NSSize boundsSz	= {sz.width / fDisplayScale, sz.height / fDisplayScale};
 
-	[self setFrameSize:frameSz];
-	[self setBoundsSize:sz];
+	[self setFrameSize:sz];
+	[self setBoundsSize:boundsSz];
 	[self setNeedsDisplay:YES];
 
 	if (fNeedsRecalc == kFirstRecalc) {
@@ -710,4 +710,23 @@ static int8_t sSharpAcc[] = {
 	[self setNeedsDisplay: YES];
 }
 
+- (void) setScaleFactor:(float)scale
+{
+	fDisplayScale= scale;
+	fNeedsRecalc = kRecalc;
+	[self setNeedsDisplay: YES];	
+}
+
+#if 0
+- (IBAction) zoomIn: (id) sender
+{
+	[self setScaleFactor: fDisplayScale * sqrt(2.0)];
+}
+
+- (IBAction) zoomOut: (id) sender
+{
+	[self setScaleFactor: fDisplayScale / sqrt(2.0)];
+}
+#endif
+
 @end