draggable scrollbar

source/ngc/gui/gui.h

@@ -71,6 +71,7 @@ enum
 	STATE_DEFAULT,
 	STATE_SELECTED,
 	STATE_CLICKED,
+	STATE_HELD,
 	STATE_DISABLED
 };
 
@@ -153,6 +154,30 @@ class GuiElement
 		//!Considers vertical alignment, y offset, height, and parent element's GetTop() / GetHeight() values
 		//!\return top coordinate
 		int GetTop();
+		//!Sets the minimum y offset of the element
+		//!\param y Y offset
+		void SetMinY(int y);
+		//!Gets the minimum y offset of the element
+		//!\return Minimum Y offset
+		int GetMinY();
+		//!Sets the maximum y offset of the element
+		//!\param y Y offset
+		void SetMaxY(int y);
+		//!Gets the maximum y offset of the element
+		//!\return Maximum Y offset
+		int GetMaxY();
+		//!Sets the minimum x offset of the element
+		//!\param x X offset
+		void SetMinX(int x);
+		//!Gets the minimum x offset of the element
+		//!\return Minimum X offset
+		int GetMinX();
+		//!Sets the maximum x offset of the element
+		//!\param x X offset
+		void SetMaxX(int x);
+		//!Gets the maximum x offset of the element
+		//!\return Maximum X offset
+		int GetMaxX();
 		//!Gets the current width of the element. Does not currently consider the scale
 		//!\return width
 		int GetWidth();
@@ -172,12 +197,18 @@ class GuiElement
 		//!Checks whether or not the element is clickable
 		//!\return true if clickable, false otherwise
 		bool IsClickable();
+		//!Checks whether or not the element is draggable
+		//!\return true if draggable, false otherwise
+		bool IsDraggable();
 		//!Sets whether or not the element is selectable
 		//!\param s Selectable
 		void SetSelectable(bool s);
 		//!Sets whether or not the element is clickable
 		//!\param c Clickable
 		void SetClickable(bool c);
+		//!Sets whether or not the element is draggable
+		//!\param c Draggable
+		void SetDraggable(bool d);
 		//!Gets the element's current state
 		//!\return state
 		int GetState();
@@ -270,6 +301,10 @@ class GuiElement
 		int height; //!< Element height
 		int xoffset; //!< Element X offset
 		int yoffset; //!< Element Y offset
+		int ymin; //!< Element's min Y offset allowed
+		int ymax; //!< Element's max Y offset allowed
+		int xmin; //!< Element's min X offset allowed
+		int xmax; //!< Element's max X offset allowed
 		int xoffsetDyn; //!< Element X offset, dynamic (added to xoffset value for animation effects)
 		int yoffsetDyn; //!< Element Y offset, dynamic (added to yoffset value for animation effects)
 		int alpha; //!< Element alpha value (0-255)
@@ -286,8 +321,10 @@ class GuiElement
 		int alignmentHor; //!< Horizontal element alignment, respective to parent element (LEFT, RIGHT, CENTRE)
 		int alignmentVert; //!< Horizontal element alignment, respective to parent element (TOP, BOTTOM, MIDDLE)
 		int state; //!< Element state (DEFAULT, SELECTED, CLICKED, DISABLED)
+		int stateChan; //!< Which controller channel is responsible for the last change in state
 		bool selectable; //!< Whether or not this element selectable (can change to SELECTED state)
 		bool clickable; //!< Whether or not this element is clickable (can change to CLICKED state)
+		bool draggable; //!< Whether or not this element is draggable (can change to HELD state)
 		GuiTrigger * trigger[2]; //!< GuiTriggers (input actions) that this element responds to
 		GuiElement * parentElement; //!< Parent element
 		UpdateCallback updateCB; //!< Callback function to call when this element is updated
@@ -615,6 +652,7 @@ class GuiFileBrowser : public GuiElement
 		GuiSound * btnSoundOver;
 		GuiSound * btnSoundClick;
 		GuiTrigger * trigA;
+		GuiTrigger * trigHeldA;
 };
 
 typedef struct _optionlist {

source/ngc/gui/gui_button.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_button.cpp
  *
@@ -115,19 +115,19 @@ void GuiButton::Draw()
 		return;
 
 	// draw image
-	if(state == STATE_SELECTED && imageOver)
+	if((state == STATE_SELECTED || state == STATE_HELD) && imageOver)
 		imageOver->Draw();
 	else if(image)
 		image->Draw();
 	// draw icon
-	if(state == STATE_SELECTED && iconOver)
+	if((state == STATE_SELECTED || state == STATE_HELD) && iconOver)
 		iconOver->Draw();
 	else if(icon)
 		icon->Draw();
 	// draw text
 	for(int i=0; i<3; i++)
 	{
-		if(state == STATE_SELECTED && labelOver[i])
+		if((state == STATE_SELECTED || state == STATE_HELD) && labelOver[i])
 			labelOver[i]->Draw();
 		else if(label[i])
 			label[i]->Draw();
@@ -226,6 +226,45 @@ void GuiButton::Update(GuiTrigger * t)
 		}
 	}
 
+	if(this->IsDraggable())
+	{
+		bool held = false;
+
+		for(int i=0; i<2; i++)
+		{
+			if(trigger[i] && (trigger[i]->chan == -1 || trigger[i]->chan == t->chan))
+			{
+				// higher 16 bits only (wiimote)
+				s32 wm_btns = t->wpad.btns_h << 16;
+				s32 wm_btns_trig = trigger[i]->wpad.btns_h << 16;
+
+				// lower 16 bits only (classic controller)
+				s32 cc_btns = t->wpad.btns_h >> 16;
+				s32 cc_btns_trig = trigger[i]->wpad.btns_h >> 16;
+
+				if(
+					(t->wpad.btns_h > 0 &&
+					wm_btns == wm_btns_trig ||
+					(cc_btns == cc_btns_trig && t->wpad.exp.type == EXP_CLASSIC)) ||
+					(t->pad.btns_h == trigger[i]->pad.btns_h && t->pad.btns_h > 0))
+				{
+					if(trigger[i]->type == TRIGGER_HELD)
+						held = true;
+				}
+
+				if(!held && state == STATE_HELD && stateChan == t->chan)
+				{
+					state = STATE_DEFAULT;
+				}
+				else if(held && state == STATE_SELECTED)
+				{
+					state = STATE_HELD;
+					stateChan = t->chan; // record which controller is holding the button
+				}
+			}
+		}
+	}
+
 	if(updateCB)
 		updateCB(this);
 }

source/ngc/gui/gui_element.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_element.cpp
  *
@@ -17,17 +17,23 @@ GuiElement::GuiElement()
 {
 	xoffset = 0;
 	yoffset = 0;
+	xmin = 0;
+	xmax = 0;
+	ymin = 0;
+	ymax = 0;
 	width = 0;
 	height = 0;
 	alpha = 255;
 	scale = 1;
 	state = STATE_DEFAULT;
+	stateChan = -1;
 	trigger[0] = NULL;
 	trigger[1] = NULL;
 	parentElement = NULL;
 	rumble = true;
 	selectable = false;
 	clickable = false;
+	draggable = false;
 	visible = true;
 	focus = -1; // cannot be focused
 	updateCB = NULL;
@@ -128,6 +134,46 @@ int GuiElement::GetTop()
 	return y + yoffset;
 }
 
+void GuiElement::SetMinX(int x)
+{
+	xmin = x;
+}
+
+int GuiElement::GetMinX()
+{
+	return xmin;
+}
+
+void GuiElement::SetMaxX(int x)
+{
+	xmax = x;
+}
+
+int GuiElement::GetMaxX()
+{
+	return xmax;
+}
+
+void GuiElement::SetMinY(int y)
+{
+	ymin = y;
+}
+
+int GuiElement::GetMinY()
+{
+	return ymin;
+}
+
+void GuiElement::SetMaxY(int y)
+{
+	ymax = y;
+}
+
+int GuiElement::GetMaxY()
+{
+	return ymax;
+}
+
 /**
  * Get the width of the GuiElement.
  * @see SetWidth()
@@ -243,6 +289,11 @@ void GuiElement::SetSelectable(bool s)
 	selectable = s;
 }
 
+void GuiElement::SetDraggable(bool d)
+{
+	draggable = d;
+}
+
 bool GuiElement::IsSelectable()
 {
 	if(state == STATE_DISABLED || state == STATE_CLICKED)
@@ -253,12 +304,22 @@ bool GuiElement::IsSelectable()
 
 bool GuiElement::IsClickable()
 {
-	if(state == STATE_DISABLED || state == STATE_CLICKED)
+	if(state == STATE_DISABLED ||
+		state == STATE_CLICKED ||
+		state == STATE_HELD)
 		return false;
 	else
 		return clickable;
 }
 
+bool GuiElement::IsDraggable()
+{
+	if(state == STATE_DISABLED)
+		return false;
+	else
+		return draggable;
+}
+
 void GuiElement::SetFocus(int f)
 {
 	focus = f;

source/ngc/gui/gui_filebrowser.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_filebrowser.cpp
  *
@@ -29,6 +29,12 @@ GuiFileBrowser::GuiFileBrowser(int w, int h)
 	else
 		trigA->SetSimpleTrigger(-1, WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
 
+	trigHeldA = new GuiTrigger;
+	if(GCSettings.WiimoteOrientation)
+		trigHeldA->SetHeldTrigger(-1, WPAD_BUTTON_2 | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
+	else
+		trigHeldA->SetHeldTrigger(-1, WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
+
 	btnSoundOver = new GuiSound(button_over_pcm, button_over_pcm_size, SOUND_PCM);
 	btnSoundClick = new GuiSound(button_click_pcm, button_click_pcm_size, SOUND_PCM);
 
@@ -84,7 +90,12 @@ GuiFileBrowser::GuiFileBrowser(int w, int h)
 	scrollbarBoxBtn->SetImage(scrollbarBoxImg);
 	scrollbarBoxBtn->SetImageOver(scrollbarBoxOverImg);
 	scrollbarBoxBtn->SetAlignment(ALIGN_RIGHT, ALIGN_TOP);
+	scrollbarBoxBtn->SetMinY(0);
+	scrollbarBoxBtn->SetMaxY(304);
 	scrollbarBoxBtn->SetSelectable(false);
+	scrollbarBoxBtn->SetClickable(false);
+	scrollbarBoxBtn->SetDraggable(true);
+	scrollbarBoxBtn->SetTrigger(trigHeldA);
 
 	for(int i=0; i<PAGESIZE; i++)
 	{
@@ -202,14 +213,45 @@ void GuiFileBrowser::Update(GuiTrigger * t)
 	if(state == STATE_DISABLED || !t)
 		return;
 
+	int position;
+
 	// update the location of the scroll box based on the position in the file list
-	int position = 136*(browser.pageIndex + selectedItem) / browser.numEntries;
+	position = 136*(browser.pageIndex + selectedItem) / browser.numEntries;
 	scrollbarBoxBtn->SetPosition(0,position+36);
 
 	arrowUpBtn->Update(t);
 	arrowDownBtn->Update(t);
 	scrollbarBoxBtn->Update(t);
 
+	if(scrollbarBoxBtn->GetState() == STATE_HELD)
+	{
+		// move the file listing to respond to wiimote cursor movement
+		if(t->wpad.ir.valid)
+		{
+			scrollbarBoxBtn->SetPosition(0,0);
+			position = t->wpad.ir.y - 60 - scrollbarBoxBtn->GetTop();
+
+			if(position > scrollbarBoxBtn->GetMinY() &&
+				position < scrollbarBoxBtn->GetMaxY())
+			{
+				scrollbarBoxBtn->SetPosition(0, position);
+				browser.pageIndex = (position * browser.numEntries)/136.0 - selectedItem;
+
+				if(browser.pageIndex <= 0)
+				{
+					browser.pageIndex = 0;
+					selectedItem = 0;
+				}
+				else if(browser.pageIndex+PAGESIZE >= browser.numEntries)
+				{
+					browser.pageIndex = browser.numEntries-PAGESIZE;
+					selectedItem = PAGESIZE-1;
+				}
+				listChanged = true;
+			}
+		}
+	}
+
 	// pad/joystick navigation
 	if(!focus)
 	{

source/ngc/gui/gui_image.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_image.cpp
  *

source/ngc/gui/gui_imagedata.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_imagedata.cpp
  *

source/ngc/gui/gui_keyboard.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_keyboard.cpp
  *

source/ngc/gui/gui_optionbrowser.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_optionbrowser.cpp
  *

source/ngc/gui/gui_savebrowser.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_savebrowser.cpp
  *

source/ngc/gui/gui_sound.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_sound.cpp
  *

source/ngc/gui/gui_text.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_text.cpp
  *

source/ngc/gui/gui_trigger.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_trigger.cpp
  *
@@ -42,6 +42,19 @@ void GuiTrigger::SetSimpleTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
 	pad.btns_d = gcbtns;
 }
 
+/**
+ * Sets a held trigger. Requires:
+ * - Element is selected
+ * - Trigger button is pressed and held
+ */
+void GuiTrigger::SetHeldTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
+{
+	type = TRIGGER_HELD;
+	chan = ch;
+	wpad.btns_h = wiibtns;
+	pad.btns_h = gcbtns;
+}
+
 /**
  * Sets a button trigger. Requires:
  * - Trigger button is pressed

source/ngc/gui/gui_window.cpp

@@ -1,7 +1,7 @@
 /****************************************************************************
- * Snes9x 1.51 Nintendo Wii/Gamecube Port
+ * libwiigui
  *
- * Tantric February 2009
+ * Tantric 2009
  *
  * gui_window.cpp
  *

source/ngc/input.h

@@ -34,6 +34,7 @@
 enum
 {
 	TRIGGER_SIMPLE,
+	TRIGGER_HELD,
 	TRIGGER_BUTTON_ONLY,
 	TRIGGER_BUTTON_ONLY_IN_FOCUS
 };
@@ -56,6 +57,7 @@ class GuiTrigger
 		GuiTrigger();
 		~GuiTrigger();
 		void SetSimpleTrigger(s32 ch, u32 wiibtns, u16 gcbtns);
+		void SetHeldTrigger(s32 ch, u32 wiibtns, u16 gcbtns);
 		void SetButtonOnlyTrigger(s32 ch, u32 wiibtns, u16 gcbtns);
 		void SetButtonOnlyInFocusTrigger(s32 ch, u32 wiibtns, u16 gcbtns);
 		s8 WPAD_Stick(u8 right, int axis);