usbloadergx/source/GUI/gui_scrollbar.cpp

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/***************************************************************************
* Copyright (C) 2011
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
***************************************************************************/
#include "themes/Resources.h"
#include "menu/menus.h"
#include "gui_scrollbar.hpp"
#include "utils/tools.h"
GuiScrollbar::GuiScrollbar(int h, u8 m)
{
SelItem = 0;
SelInd = 0;
RowSize = 0;
PageSize = 0;
EntrieCount = 0;
ScrollSpeed = 15;
ButtonScroll = 0;
ButtonScrollSpeed = 20;
ScrollState = 0;
pressedChan = -1;
AllowDPad = true;
Mode = m;
listChanged.connect(this, &GuiScrollbar::setScrollboxPosition);
scrollbarTop = Resources::GetImageData("scrollBarTop.png");
scrollbarBottom = Resources::GetImageData("scrollBarBottom.png");
scrollbarTile = Resources::GetImageData("scrollBarTile.png");
arrowDown = Resources::GetImageData("scrollbar_arrowdown.png");
arrowDownOver = Resources::GetImageData("scrollbar_arrowdown.png");
arrowUp = Resources::GetImageData("scrollbar_arrowup.png");
arrowUpOver = Resources::GetImageData("scrollbar_arrowup.png");
scrollbarBox = Resources::GetImageData("scrollbar_box.png");
scrollbarBoxOver = Resources::GetImageData("scrollbar_box.png");
oneButtonScrollImgData = Resources::GetImageData("oneButtonScroll.png");
height = h;
width = MAX(scrollbarBox->GetWidth(), scrollbarTile->GetWidth());
MinHeight = arrowUp->GetHeight();
MaxHeight = height-scrollbarBox->GetHeight()-arrowDown->GetHeight();
trigHeldA = new GuiTrigger;
trigHeldA->SetHeldTrigger(-1, WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
int Tiles = (height-scrollbarTop->GetHeight()-scrollbarBottom->GetHeight())/4;
int PositionY = 0;
ButtonPositionX = 0;
oneButtonScrollImg = new GuiImage(oneButtonScrollImgData);
scrollbarTopImg = new GuiImage(scrollbarTop);
scrollbarTopImg->SetParent(this);
scrollbarTopImg->SetAlignment(ALIGN_CENTER, ALIGN_TOP);
scrollbarTopImg->SetPosition(0, PositionY);
PositionY += scrollbarTop->GetHeight();
scrollbarTileImg = new GuiImage(scrollbarTile);
scrollbarTileImg->SetParent(this);
scrollbarTileImg->SetAlignment(ALIGN_CENTER, ALIGN_TOP);
scrollbarTileImg->SetPosition(0, PositionY);
scrollbarTileImg->SetTileVertical(Tiles);
PositionY += Tiles*scrollbarTile->GetHeight();
scrollbarBottomImg = new GuiImage(scrollbarBottom);
scrollbarBottomImg->SetParent(this);
scrollbarBottomImg->SetAlignment(ALIGN_CENTER, ALIGN_TOP);
scrollbarBottomImg->SetPosition(0, PositionY);
arrowDownImg = new GuiImage(arrowDown);
arrowDownOverImg = new GuiImage(arrowDownOver);
arrowUpImg = new GuiImage(arrowUp);
arrowUpOverImg = new GuiImage(arrowUpOver);
scrollbarBoxImg = new GuiImage(scrollbarBox);
scrollbarBoxOverImg = new GuiImage(scrollbarBoxOver);
arrowUpBtn = new GuiButton(arrowUpImg->GetWidth(), arrowUpImg->GetHeight());
arrowUpBtn->SetParent(this);
arrowUpBtn->SetImage(arrowUpImg);
arrowUpBtn->SetImageOver(arrowUpOverImg);
arrowUpBtn->SetAlignment(ALIGN_CENTER, ALIGN_TOP);
arrowUpBtn->SetPosition(ButtonPositionX, 0);
arrowUpBtn->SetHoldable(true);
arrowUpBtn->SetTrigger(trigHeldA);
arrowUpBtn->SetSoundOver(btnSoundOver);
arrowUpBtn->SetSoundClick(btnSoundClick);
arrowUpBtn->Held.connect(this, &GuiScrollbar::OnUpButtonHold);
arrowDownBtn = new GuiButton(arrowDownImg->GetWidth(), arrowDownImg->GetHeight());
arrowDownBtn->SetParent(this);
arrowDownBtn->SetImage(arrowDownImg);
arrowDownBtn->SetImageOver(arrowDownOverImg);
arrowDownBtn->SetAlignment(ALIGN_CENTER, ALIGN_BOTTOM);
arrowDownBtn->SetPosition(ButtonPositionX, 0);
arrowDownBtn->SetHoldable(true);
arrowDownBtn->SetTrigger(trigHeldA);
arrowDownBtn->SetSoundOver(btnSoundOver);
arrowDownBtn->SetSoundClick(btnSoundClick);
arrowDownBtn->Held.connect(this, &GuiScrollbar::OnDownButtonHold);
scrollbarBoxBtn = new GuiButton(scrollbarBoxImg->GetWidth(), scrollbarBoxImg->GetHeight());
scrollbarBoxBtn->SetParent(this);
scrollbarBoxBtn->SetImage(scrollbarBoxImg);
scrollbarBoxBtn->SetImageOver(scrollbarBoxOverImg);
scrollbarBoxBtn->SetAlignment(ALIGN_CENTER, ALIGN_TOP);
scrollbarBoxBtn->SetPosition(ButtonPositionX, MinHeight);
scrollbarBoxBtn->SetMinY(MinHeight);
scrollbarBoxBtn->SetMaxY(MaxHeight);
scrollbarBoxBtn->SetHoldable(true);
scrollbarBoxBtn->SetTrigger(trigHeldA);
scrollbarBoxBtn->Held.connect(this, &GuiScrollbar::OnBoxButtonHold);
}
GuiScrollbar::~GuiScrollbar()
{
delete scrollbarTop;
delete scrollbarBottom;
delete scrollbarTile;
delete arrowDown;
delete arrowDownOver;
delete arrowUp;
delete arrowUpOver;
delete scrollbarBox;
delete scrollbarBoxOver;
delete oneButtonScrollImg;
delete arrowUpBtn;
delete arrowDownBtn;
delete scrollbarBoxBtn;
delete scrollbarTopImg;
delete scrollbarBottomImg;
delete scrollbarTileImg;
delete arrowDownImg;
delete arrowDownOverImg;
delete arrowUpImg;
delete arrowUpOverImg;
delete scrollbarBoxImg;
delete scrollbarBoxOverImg;
delete oneButtonScrollImgData;
delete trigHeldA;
}
void GuiScrollbar::ScrollOneUp()
{
if(Mode == ICONMODE)
{
if(SelInd+SelItem-RowSize >= 0)
{
SelItem = SelItem-RowSize;
if(SelItem < 0)
{
// move list up by 1
SelInd = SelInd-RowSize;
SelItem = SelItem+RowSize;
}
}
}
else if(Mode == LISTMODE)
{
if(SelItem == 0 && SelInd > 0)
{
// move list up by 1
--SelInd;
}
else if(SelInd+SelItem > 0)
{
--SelItem;
}
}
}
void GuiScrollbar::ScrollOneDown()
{
if(Mode == ICONMODE)
{
int i = RowSize;
while(SelInd+SelItem+RowSize >= EntrieCount && i > 0 && SelItem > 0 && RowSize < EntrieCount)
{
--i;
--SelItem;
}
if(SelInd+SelItem+RowSize < EntrieCount)
{
SelItem = SelItem+RowSize;
if(SelItem >= PageSize)
{
// move list down by 1
SelInd += RowSize;
SelItem = SelItem-RowSize;
}
}
}
else if(Mode == LISTMODE)
{
if(SelInd+SelItem + 1 < EntrieCount)
{
if(SelItem == PageSize-1)
{
// move list down by 1
SelInd++;
}
else
{
SelItem++;
}
}
}
}
void GuiScrollbar::OnUpButtonHold(GuiButton *sender, int pointer, const POINT &p)
{
if(ScrollState < ScrollSpeed)
return;
ScrollOneUp();
ScrollState = 0;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::OnDownButtonHold(GuiButton *sender, int pointer, const POINT &p)
{
if(ScrollState < ScrollSpeed)
return;
ScrollOneDown();
ScrollState = 0;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::OnBoxButtonHold(GuiButton *sender, int pointer, const POINT &p)
{
if(ScrollState < ScrollSpeed)
return;
if(!userInput[pointer].wpad.ir.valid)
return;
int y = p.y-this->GetTop()-scrollbarBox->GetHeight()/2;
int positionWiimote = LIMIT(y-MinHeight, 0, MaxHeight-MinHeight);
int newSelected = (int) ((float) positionWiimote / (float) (MaxHeight-MinHeight) * (float) (EntrieCount-1));
if(Mode == ICONMODE)
{
int rows = (int) floor(((float) (newSelected-SelInd-SelItem)) / ((float) RowSize));
while(SelInd+rows*RowSize >= EntrieCount-PageSize+RowSize)
rows--;
int pageIndex = LIMIT(SelInd+rows*RowSize, 0, EntrieCount-1-RowSize);
if(newSelected <= 0)
SelItem = 0;
else if(newSelected >= EntrieCount-1)
SelItem = EntrieCount-1-pageIndex;
SelInd = pageIndex;
}
else if(Mode == LISTMODE)
{
int diff = newSelected-SelInd-SelItem;
if(newSelected <= 0)
{
SelItem = 0;
SelInd = 0;
}
else if(newSelected >= EntrieCount-1)
{
SelItem = (PageSize-1 < EntrieCount-1) ? PageSize-1 : EntrieCount-1;
SelInd = EntrieCount-PageSize;
}
else if(newSelected < PageSize && SelInd == 0 && diff < 0)
{
SelItem = MAX(SelItem+diff, 0);
}
else if(EntrieCount-newSelected < PageSize && SelInd == EntrieCount-PageSize && diff > 0)
{
SelItem = MIN(SelItem+diff, PageSize-1);
}
else
{
SelInd = LIMIT(SelInd+diff, 0, ((EntrieCount-PageSize < 0) ? 0 : EntrieCount-PageSize));
}
}
ScrollState = 0;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::SetPageSize(int size)
{
if(PageSize == size)
return;
PageSize = size;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::SetRowSize(int size)
{
if(RowSize == size)
return;
RowSize = size;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::SetSelectedItem(int pos)
{
if(SelItem == pos)
return;
SelItem = pos;
}
void GuiScrollbar::SetSelectedIndex(int pos)
{
if(SelInd == pos)
return;
SelInd = pos;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::SetEntrieCount(int cnt)
{
if(EntrieCount == cnt)
return;
EntrieCount = cnt;
listChanged(SelItem, SelInd);
}
void GuiScrollbar::setScrollboxPosition(int SelItem, int SelInd)
{
if(Mode == ICONMODE)
{
u8 row = (u8) floor((float) SelItem / (float) RowSize);
int position = MinHeight+(MaxHeight-MinHeight)*(SelInd+row*RowSize)/(EntrieCount-1);
if(position < MinHeight)
position = MinHeight;
else if(position > MaxHeight || ((SelInd+PageSize >= (EntrieCount-1)) && row > 1))
position = MaxHeight;
scrollbarBoxBtn->SetPosition(ButtonPositionX, position);
}
else if(Mode == LISTMODE)
{
int position = MinHeight+(MaxHeight-MinHeight)*(SelInd+SelItem)/(EntrieCount-1);
if(position < MinHeight)
position = MinHeight;
else if(position > MaxHeight || (SelInd+SelItem >= EntrieCount-1))
position = MaxHeight;
scrollbarBoxBtn->SetPosition(ButtonPositionX, position);
}
}
void GuiScrollbar::CheckDPadControls(GuiTrigger *t)
{
if(t->Up())
{
ScrollOneUp();
listChanged(SelItem, SelInd);
}
else if(t->Down())
{
ScrollOneDown();
listChanged(SelItem, SelInd);
}
else if(t->Left() && Mode == LISTMODE)
{
SelInd -= PageSize;
if(SelInd < 0)
{
SelInd = 0;
SelItem = 0;
}
listChanged(SelItem, SelInd);
}
else if(t->Right() && Mode == LISTMODE)
{
SelInd += PageSize;
if(SelInd+PageSize >= EntrieCount)
{
SelInd = EntrieCount-PageSize;
SelItem = PageSize-1;
}
listChanged(SelItem, SelInd);
}
}
void GuiScrollbar::ScrollByButton(GuiTrigger *t)
{
static int pressedPosition = -1;
if(!t->wpad.ir.valid || ScrollState < ButtonScrollSpeed-ButtonScrollSpeed*fabs(pressedPosition-t->wpad.ir.y)/250.f)
return;
if(pressedChan == -1 && (t->wpad.btns_d & ButtonScroll) &&
parentElement && parentElement->IsInside(t->wpad.ir.x, t->wpad.ir.y))
{
pressedPosition = t->wpad.ir.y;
pressedChan = t->chan;
oneButtonScrollImg->SetPosition(t->wpad.ir.x-oneButtonScrollImg->GetWidth()/2, t->wpad.ir.y-oneButtonScrollImg->GetHeight()/2);
}
if(pressedChan == t->chan && (t->wpad.btns_h & ButtonScroll))
{
if(pressedPosition-oneButtonScrollImg->GetHeight()/2 > t->wpad.ir.y)
ScrollOneUp();
else if(pressedPosition+oneButtonScrollImg->GetHeight()/2 < t->wpad.ir.y)
ScrollOneDown();
ScrollState = 0;
listChanged(SelItem, SelInd);
}
if(pressedChan == t->chan && !t->wpad.btns_d && !t->wpad.btns_h)
{
pressedChan = -1;
pressedPosition = -1;
}
}
void GuiScrollbar::Draw()
{
if(PageSize >= EntrieCount)
{
scrollbarTileImg->Draw();
scrollbarTopImg->Draw();
scrollbarBottomImg->Draw();
arrowUpBtn->Draw();
arrowDownBtn->Draw();
scrollbarBoxBtn->Draw();
}
if(pressedChan >= 0 && userInput[pressedChan].wpad.ir.valid)
oneButtonScrollImg->Draw();
UpdateEffects();
}
void GuiScrollbar::Update(GuiTrigger * t)
{
if(PageSize >= EntrieCount)
{
arrowUpBtn->Update(t);
arrowDownBtn->Update(t);
scrollbarBoxBtn->Update(t);
}
if(AllowDPad)
CheckDPadControls(t);
if(ButtonScroll)
ScrollByButton(t);
++ScrollState;
}