ProbeView accidently didn't listen to kDataViewPreferredSize events.

Implemented the "Fit" font size setting.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6773 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/diskprobe/DataView.cpp

@@ -57,7 +57,8 @@ DataView::DataView(BRect rect, DataEditor &editor)
 	fEditor(editor),
 	fFocus(kHexFocus),
 	fBase(kHexBase),
-	fIsActive(true)
+	fIsActive(true),
+	fFitFontSize(false)
 {
 	fPositionLength = 4;
 	fStart = fEnd = 0;
@@ -816,6 +817,31 @@ DataView::UpdateScroller()
 void
 DataView::FrameResized(float width, float height)
 {
+	if (fFitFontSize) {
+		// adapt the font size to fit in the view's bounds
+		float oldSize = FontSize();
+		BFont font = be_fixed_font;
+		float steps = 0.5f;
+
+		float size;
+		for (size = 1.f; size < 100; size += steps) {
+			font.SetSize(size);
+			float charWidth = font.StringWidth("w");
+			if (charWidth * (kBlockSize * 4 + fPositionLength + 6) + 2 * kHorizontalSpace > width)
+				break;
+
+			if (size > 6)
+				steps = 1.0f;
+		}
+		size -= steps;
+		font.SetSize(size);
+
+		if (oldSize != size) {
+			SetFont(&font);
+			Invalidate();
+		}
+	}
+
 	UpdateScroller();
 }
 
@@ -1034,7 +1060,7 @@ DataView::SetFont(const BFont *font, uint32 properties)
 		return;
 
 	BView::SetFont(font, properties);
-	
+
 	font_height fontHeight;
 	font->GetHeight(&fontHeight);
 
@@ -1057,9 +1083,17 @@ DataView::FontSize() const
 void 
 DataView::SetFontSize(float point)
 {
-	// ToDo: "fit" is not yet supported
-	if (point == 0.0f)
-		point = 12.0f;
+	bool fit = (point == 0.0f);
+	if (fit) {
+		if (!fFitFontSize)
+			SendNotices(kDataViewPreferredSize);
+		fFitFontSize = fit;
+
+		FrameResized(Bounds().Width(), Bounds().Height());
+		return;
+	}
+
+	fFitFontSize = false;
 
 	BFont font = be_fixed_font;
 	font.SetSize(point);

src/apps/diskprobe/DataView.h

@@ -46,6 +46,7 @@ class DataView : public BView {
 		virtual void SetFont(const BFont *font, uint32 properties = B_FONT_ALL);
 		virtual void GetPreferredSize(float *_width, float *_height);
 
+		bool FontSizeFitsBounds() const { return fFitFontSize; }
 		float FontSize() const;
 		void SetFontSize(float point);
 
@@ -94,6 +95,7 @@ class DataView : public BView {
 		int32		fStart, fEnd;
 		int32		fMouseSelectionStart;
 		int32		fBitPosition;
+		bool		fFitFontSize;
 };
 
 static const uint32 kMsgBaseType = 'base';

src/apps/diskprobe/ProbeView.cpp

@@ -921,13 +921,16 @@ ProbeView::UpdateSizeLimits()
 	if (Window() == NULL)
 		return;
 
-	float width, height;
-	fDataView->GetPreferredSize(&width, &height);
+	if (!fDataView->FontSizeFitsBounds()) {
+		float width, height;
+		fDataView->GetPreferredSize(&width, &height);
 
-	BRect frame = Window()->ConvertFromScreen(ConvertToScreen(fHeaderView->Frame()));
+		BRect frame = Window()->ConvertFromScreen(ConvertToScreen(fHeaderView->Frame()));
 
-	Window()->SetSizeLimits(200, width + B_V_SCROLL_BAR_WIDTH,
-		200, height + frame.bottom + 4 + B_H_SCROLL_BAR_HEIGHT);
+		Window()->SetSizeLimits(200, width + B_V_SCROLL_BAR_WIDTH,
+			200, height + frame.bottom + 4 + B_H_SCROLL_BAR_HEIGHT);
+	} else
+		Window()->SetSizeLimits(200, 32768, 200, 32768);
 }
 
 
@@ -941,6 +944,7 @@ ProbeView::DetachedFromWindow()
 	fEditor.StopWatching(this);
 	fDataView->StopWatching(fHeaderView, kDataViewCursorPosition);
 	fDataView->StopWatching(this, kDataViewSelection);
+	fDataView->StopWatching(this, kDataViewPreferredSize);
 	be_clipboard->StopWatching(this);
 }
 
@@ -1031,6 +1035,7 @@ ProbeView::AttachedToWindow()
 	fEditor.StartWatching(this);
 	fDataView->StartWatching(fHeaderView, kDataViewCursorPosition);
 	fDataView->StartWatching(this, kDataViewSelection);
+	fDataView->StartWatching(this, kDataViewPreferredSize);
 	be_clipboard->StartWatching(this);
 
 	// Add menu to window
@@ -1161,8 +1166,11 @@ ProbeView::AttachedToWindow()
 	// Font Size
 
 	subMenu = new BMenu("Font Size");
+	subMenu->SetRadioMode(true);
 	const int32 fontSizes[] = {9, 10, 12, 14, 18, 24, 36, 48};
 	int32 fontSize = int32(fDataView->FontSize() + 0.5);
+	if (fDataView->FontSizeFitsBounds())
+		fontSize = 0;
 	for (uint32 i = 0; i < sizeof(fontSizes) / sizeof(fontSizes[0]); i++) {
 		char buffer[16];
 		snprintf(buffer, sizeof(buffer), "%ld", fontSizes[i]);
@@ -1172,12 +1180,12 @@ ProbeView::AttachedToWindow()
 			item->SetMarked(true);
 	}
 	subMenu->AddSeparatorItem();
-	subMenu->AddItem(item = new BMenuItem("Fit", new BMessage(kMsgFontSize)));
+	subMenu->AddItem(item = new BMenuItem("Fit", message = new BMessage(kMsgFontSize)));
+	message->AddFloat("font_size", 0.0f);
 	if (fontSize == 0)
 		item->SetMarked(true);
 
 	subMenu->SetTargetForItems(this);
-	subMenu->SetRadioMode(true);
 	menu->AddItem(new BMenuItem(subMenu));
 
 	bar->AddItem(menu);
@@ -1407,10 +1415,9 @@ ProbeView::MessageReceived(BMessage *message)
 
 		case kMsgFontSize:
 		{
-			float size = 0.0f;
-			message->FindFloat("font_size", &size);
-				// if there is no "font_size" member, the size will
-				// be adapted to fit the window size (0)
+			float size;
+			if (message->FindFloat("font_size", &size) != B_OK)
+				break;
 
 			fDataView->SetFontSize(size);