Finish scroll bars

2025-09-22 22:45:39 +00:00 · 2020-03-14 04:29:47 -04:00
parent dd78b08a5f
commit d394975336
4 changed files with 205 additions and 58 deletions
--- a/GpApp/Map.cpp
+++ b/GpApp/Map.cpp
@@ -248,6 +248,9 @@ void RedrawMapContents (void)
 			}
 			else
 			{
+				surface->SetForeColor(StdColors::White());
+				surface->FillRect(aRoom);
+
 				if (i >= groundLevel)
 					surface->SetForeColor(StdColors::Green());
 				else
@@ -464,50 +467,50 @@ void ToggleMapWindow (void)
 //--------------------------------------------------------------  LiveHScrollAction
 #ifndef COMPILEDEMO

-void LiveHScrollAction (ControlHandle theControl, short thePart)
+void LiveHScrollAction (PortabilityLayer::Widget *theControl, int thePart)
 {
 	short		wasValue, newValue;
 	
 	switch (thePart)
 	{
 		case kControlUpButtonPart:
-		wasValue = GetControlValue(theControl);
-		SetControlValue(theControl, wasValue - 1);
-		if (GetControlValue(theControl) != wasValue)
+		wasValue = theControl->GetState();
+		theControl->SetState(wasValue - 1);
+		if (theControl->GetState() != wasValue)
 		{
-			mapLeftRoom = GetControlValue(theControl);
+			mapLeftRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlDownButtonPart:
-		wasValue = GetControlValue(theControl);
-		SetControlValue(theControl, wasValue + 1);
-		if (GetControlValue(theControl) != wasValue)
+		wasValue = theControl->GetState();
+		theControl->SetState(wasValue + 1);
+		if (theControl->GetState() != wasValue)
 		{
-			mapLeftRoom = GetControlValue(theControl);
+			mapLeftRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlPageUpPart:
-		wasValue = GetControlValue(theControl);
+		wasValue = theControl->GetState();
 		newValue = wasValue - (mapRoomsWide / 2);
-		SetControlValue(theControl, newValue);
-		if (GetControlValue(theControl) != wasValue)
+		theControl->SetState(newValue);
+		if (theControl->GetState() != wasValue)
 		{
-			mapLeftRoom = GetControlValue(theControl);
+			mapLeftRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlPageDownPart:
-		wasValue = GetControlValue(theControl);
+		wasValue = theControl->GetState();
 		newValue = wasValue + (mapRoomsWide / 2);
-		SetControlValue(theControl, newValue);
-		if (GetControlValue(theControl) != wasValue)
+		theControl->SetState(newValue);
+		if (theControl->GetState() != wasValue)
 		{
-			mapLeftRoom = GetControlValue(theControl);
+			mapLeftRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
@@ -521,50 +524,50 @@ void LiveHScrollAction (ControlHandle theControl, short thePart)
 //--------------------------------------------------------------  LiveVScrollAction
 #ifndef COMPILEDEMO

-void LiveVScrollAction (ControlHandle theControl, short thePart)
+void LiveVScrollAction (PortabilityLayer::Widget *theControl, int thePart)
 {
 	short		wasValue, newValue;
 	
 	switch (thePart)
 	{
 		case kControlUpButtonPart:
-		wasValue = GetControlValue(theControl);
-		SetControlValue(theControl, wasValue - 1);
-		if (GetControlValue(theControl) != wasValue)
+		wasValue = theControl->GetState();
+		theControl->SetState(wasValue - 1);
+		if (theControl->GetState() != wasValue)
 		{
-			mapTopRoom = GetControlValue(theControl);
+			mapTopRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlDownButtonPart:
-		wasValue = GetControlValue(theControl);
-		SetControlValue(theControl, wasValue + 1);
-		if (GetControlValue(theControl) != wasValue)
+		wasValue = theControl->GetState();
+		theControl->SetState(wasValue + 1);
+		if (theControl->GetState() != wasValue)
 		{
-			mapTopRoom = GetControlValue(theControl);
+			mapTopRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlPageUpPart:
-		wasValue = GetControlValue(theControl);
+		wasValue = theControl->GetState();
 		newValue = wasValue - (mapRoomsHigh / 2);
-		SetControlValue(theControl, newValue);
-		if (GetControlValue(theControl) != wasValue)
+		theControl->SetState(newValue);
+		if (theControl->GetState() != wasValue)
 		{
-			mapTopRoom = GetControlValue(theControl);
+			mapTopRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
 		
 		case kControlPageDownPart:
-		wasValue = GetControlValue(theControl);
+		wasValue = theControl->GetState();
 		newValue = wasValue + (mapRoomsHigh / 2);
-		SetControlValue(theControl, newValue);
-		if (GetControlValue(theControl) != wasValue)
+		theControl->SetState(newValue);
+		if (theControl->GetState() != wasValue)
 		{
-			mapTopRoom = GetControlValue(theControl);
+			mapTopRoom = theControl->GetState();
 			RedrawMapContents();
 		}
 		break;
@@ -586,13 +589,9 @@ void HandleMapClick (const GpMouseInputEvent &theEvent)
 	long				controlRef;
 	short				whichPart, localH, localV;
 	short				roomH, roomV, itsNumber;
-	ControlActionUPP	scrollHActionUPP, scrollVActionUPP;
 	
 	wherePt = Point::Create(theEvent.m_x, theEvent.m_y);
 	
-	scrollHActionUPP = NewControlActionUPP(LiveHScrollAction);
-	scrollVActionUPP = NewControlActionUPP(LiveVScrollAction);
-	
 	if (mapWindow == nil)
 		return;
 	
@@ -676,14 +675,11 @@ void HandleMapClick (const GpMouseInputEvent &theEvent)
 				case kControlDownButtonPart:
 				case kControlPageUpPart:
 				case kControlPageDownPart:
-				if (TrackControl(whichControl, wherePt, scrollHActionUPP))
-				{
-					
-				}
+				whichControl->Capture(wherePt, LiveHScrollAction);
 				break;
 				
 				case kControlIndicatorPart:
-				if (TrackControl(whichControl, wherePt, nil))
+				if (whichControl->Capture(wherePt, nil))
 				{
 					mapLeftRoom = whichControl->GetState();
 					RedrawMapContents();
@@ -699,14 +695,11 @@ void HandleMapClick (const GpMouseInputEvent &theEvent)
 				case kControlDownButtonPart:
 				case kControlPageUpPart:
 				case kControlPageDownPart:
-				if (TrackControl(whichControl, wherePt, scrollVActionUPP))
-				{
-					
-				}
+				whichControl->Capture(wherePt, LiveVScrollAction);
 				break;
 				
 				case kControlIndicatorPart:
-				if (TrackControl(whichControl, wherePt, nil))
+				if (whichControl->Capture(wherePt, nil))
 				{
 					mapTopRoom = whichControl->GetState();
 					RedrawMapContents();
@@ -715,9 +708,6 @@ void HandleMapClick (const GpMouseInputEvent &theEvent)
 			}
 		}
 	}
-	
-	DisposeControlActionUPP(scrollHActionUPP);
-	DisposeControlActionUPP(scrollVActionUPP);
 #endif
 }

--- a/PortabilityLayer/PLScrollBarWidget.cpp
+++ b/PortabilityLayer/PLScrollBarWidget.cpp
@@ -1,6 +1,7 @@
 #include "PLScrollBarWidget.h"
 #include "PLControlDefinitions.h"
 #include "PLStandardColors.h"
+#include "PLTimeTaggedVOSEvent.h"

 namespace PortabilityLayer
 {
@@ -196,12 +197,161 @@ namespace PortabilityLayer
 		}
 	}

+	void ScrollBarWidget::SetState(int16_t state)
+	{
+		if (state < m_min)
+			WidgetSpec<ScrollBarWidget>::SetState(m_min);
+		else if (state > m_max)
+			WidgetSpec<ScrollBarWidget>::SetState(m_max);
+		else
+			WidgetSpec<ScrollBarWidget>::SetState(state);
+	}
+
 	void ScrollBarWidget::OnStateChanged()
 	{
 		RefreshGrip();
 		DrawControl(m_window->GetDrawSurface());
 	}

+	int16_t ScrollBarWidget::Capture(const Point &pos, WidgetUpdateCallback_t callback)
+	{
+		int part = ResolvePart(pos);
+		if (!part)
+			return 0;
+
+		if (part == kControlIndicatorPart)
+			return CaptureIndicator(pos, callback);
+		else
+			return CaptureScrollSegment(pos, part, callback);
+	}
+
+	int16_t ScrollBarWidget::CaptureScrollSegment(const Point &pos, int part, WidgetUpdateCallback_t callback)
+	{
+		int tickDelay = 15;
+
+		Point currentPos = pos;
+		bool wasInBounds = false;
+		bool isInBounds = (ResolvePart(pos) == part);
+
+		int ticksUntilIterate = 0;
+		for (;;)
+		{
+			if (ticksUntilIterate == 0)
+			{
+				if (isInBounds)
+				{
+					IterateScrollSegment(part, callback);
+					isInBounds = (ResolvePart(currentPos) == part);	// Update in-bounds since the scroll may invalidate it
+				}
+
+				ticksUntilIterate = tickDelay;
+			}
+
+			TimeTaggedVOSEvent evt;
+			if (WaitForEvent(&evt, 1))
+			{
+				if (evt.m_vosEvent.m_eventType == GpVOSEventTypes::kMouseInput)
+				{
+					const GpMouseInputEvent &mouseEvt = evt.m_vosEvent.m_event.m_mouseInputEvent;
+					if (mouseEvt.m_button == GpMouseButtons::kLeft && mouseEvt.m_eventType == GpMouseEventTypes::kUp)
+						return part;
+					else
+					{
+						currentPos = m_window->MouseToLocal(mouseEvt);
+						isInBounds = (ResolvePart(currentPos) == part);
+					}
+				}
+			}
+			else
+				ticksUntilIterate--;
+		}
+	}
+
+	int16_t ScrollBarWidget::CaptureIndicator(const Point &pos, WidgetUpdateCallback_t callback)
+	{
+		const bool isHorizontal = IsHorizontal();
+
+		const int32_t startCoordinate = isHorizontal ? pos.h : pos.v;
+		int32_t currentGripPos = m_gripPos;
+
+		Rect currentHandle;
+		if (isHorizontal)
+			currentHandle = Rect::Create(m_rect.top, m_rect.left + 16 + m_gripPos, m_rect.bottom, m_rect.left + 16 + m_gripPos + m_gripSize);
+		else
+			currentHandle = Rect::Create(m_rect.top + 16 + m_gripPos, m_rect.left, m_rect.top + 16 + m_gripPos + m_gripSize, m_rect.right);
+
+		DrawSurface *surface = this->m_window->GetDrawSurface();
+
+		uint8_t solidPattern[8] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+		surface->InvertFillRect(currentHandle, solidPattern);
+
+		for (;;)
+		{
+			TimeTaggedVOSEvent evt;
+			if (WaitForEvent(&evt, 1))
+			{
+				if (evt.m_vosEvent.m_eventType == GpVOSEventTypes::kMouseInput)
+				{
+					const GpMouseInputEvent &mouseEvt = evt.m_vosEvent.m_event.m_mouseInputEvent;
+					if (mouseEvt.m_eventType == GpMouseEventTypes::kUp || mouseEvt.m_eventType == GpMouseEventTypes::kMove)
+					{
+						const Point localPoint = m_window->MouseToLocal(mouseEvt);
+						int32_t desiredCoordinate = isHorizontal ? localPoint.h : localPoint.v;
+						int32_t desiredGripPos = m_gripPos + (desiredCoordinate - startCoordinate);
+
+						if (desiredGripPos < 0)
+							desiredGripPos = 0;
+						else if (desiredGripPos > m_laneCapacity)
+							desiredGripPos = m_laneCapacity;
+
+						if (desiredGripPos != currentGripPos)
+						{
+							surface->InvertFillRect(currentHandle, solidPattern);
+
+							if (isHorizontal)
+								currentHandle = Rect::Create(m_rect.top, m_rect.left + 16 + desiredGripPos, m_rect.bottom, m_rect.left + 16 + desiredGripPos + m_gripSize);
+							else
+								currentHandle = Rect::Create(m_rect.top + 16 + desiredGripPos, m_rect.left, m_rect.top + 16 + desiredGripPos + m_gripSize, m_rect.right);
+
+							surface->InvertFillRect(currentHandle, solidPattern);
+
+							currentGripPos = desiredGripPos;
+						}
+					}
+
+					if (mouseEvt.m_eventType == GpMouseEventTypes::kUp && mouseEvt.m_button == GpMouseButtons::kLeft)
+					{
+						surface->InvertFillRect(currentHandle, solidPattern);
+
+						//int32_t desiredState = (currentGripPos / m_laneCapacity) * (m_max - m_min);
+						int32_t desiredState = m_min;
+
+						if (m_laneCapacity > 0)
+						{
+							desiredState = ((currentGripPos * (m_max - m_min)) * 2 + m_laneCapacity) / (m_laneCapacity * 2);
+
+							// This shouldn't happen unless something weird happens like an int overflow
+							if (desiredState < m_min)
+								desiredState = m_min;
+							else if (desiredState > m_max)
+								desiredState = m_max;
+
+							SetState(desiredState);
+						}
+
+						return kControlIndicatorPart;
+					}
+				}
+			}
+		}
+	}
+
+	void ScrollBarWidget::IterateScrollSegment(int part, WidgetUpdateCallback_t callback)
+	{
+		if (callback != nullptr)
+			callback(this, part);
+	}
+
 	int ScrollBarWidget::ResolvePart(const Point &point) const
 	{
 		if (!m_rect.Contains(point))
@@ -222,17 +372,17 @@ namespace PortabilityLayer
 		}

 		if (coord < 16)
-			return isHorizontal ? kControlDownButtonPart : kControlUpButtonPart;
+			return kControlUpButtonPart;

-		if (coord < m_gripPos)
-			return isHorizontal ? kControlPageDownPart : kControlPageUpPart;
+		if (coord - 16 < m_gripPos)
+			return kControlPageUpPart;

-		if (coord - m_gripPos < m_gripSize)
+		if (coord - 16 - m_gripPos < m_gripSize)
 			return kControlIndicatorPart;

 		if (coord < span - 16)
-			return isHorizontal ? kControlPageUpPart : kControlPageDownPart;
+			return kControlPageDownPart;

-		return isHorizontal ? kControlUpButtonPart : kControlDownButtonPart;
+		return kControlDownButtonPart;
 	}
 }
--- a/PortabilityLayer/PLScrollBarWidget.h
+++ b/PortabilityLayer/PLScrollBarWidget.h
@@ -18,8 +18,11 @@ namespace PortabilityLayer
 		WidgetHandleState_t ProcessEvent(const TimeTaggedVOSEvent &evt) override;
 		void DrawControl(DrawSurface *surface) override;

+		void SetState(int16_t state) override;
 		void OnStateChanged() override;

+		int16_t Capture(const Point &pos, WidgetUpdateCallback_t callback) override;
+
 		int ResolvePart(const Point &point) const override;

 	private:
@@ -33,6 +36,10 @@ namespace PortabilityLayer

 		static void DrawBeveledBox(DrawSurface *surface, const Rect &rect);

+		int16_t CaptureScrollSegment(const Point &pos, int part, WidgetUpdateCallback_t callback);
+		int16_t CaptureIndicator(const Point &pos, WidgetUpdateCallback_t callback);
+		void IterateScrollSegment(int part, WidgetUpdateCallback_t callback);
+
 		int32_t m_min;
 		int32_t m_max;
 		int32_t m_gripSize;
--- a/PortabilityLayer/PLWidgets.h
+++ b/PortabilityLayer/PLWidgets.h
@@ -58,7 +58,7 @@ namespace PortabilityLayer
 		void Resize(uint16_t width, uint16_t height);

 		void SetEnabled(bool enabled);
-		void SetState(int16_t state);
+		virtual void SetState(int16_t state);
 		int16_t GetState() const;

 		void SetVisible(bool visible);