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implemented vertical scrolling.

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created new class VerticalTextScroller to handle task display in deck selection screens
modified detailed popup placement on deck selection screen to compensate for lack of border
This commit is contained in:
techdragon.nguyen@gmail.com
2010-11-24 16:12:18 +00:00
parent 2aa47cd68b
commit e4c8469490
6 changed files with 157 additions and 75 deletions
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173
projects/mtg/src/TextScroller.cpp
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@@ -5,24 +5,18 @@
#include "utils.h"
#include "WFont.h"
enum
{
HORIZONTAL_SCROLLER = 0, VERTICAL_SCROLLER = 1
};
TextScroller::TextScroller(int fontId, float x, float y, float width, float speed, int scrollerType, size_t numItems) :
TextScroller::TextScroller(int fontId, float x, float y, float width, float scrollSpeed) :
JGuiObject(0), fontId(fontId)
{
mWidth = width;
mSpeed = speed;
minimumItems = numItems;
mScrollSpeed = scrollSpeed;
mX = x;
mY = y;
start = -width;
timer = 0;
currentId = 0;
mRandom = 0;
scrollDirection = scrollerType;
}
void TextScroller::setRandom(int mode)
@@ -50,58 +44,131 @@ void TextScroller::Reset()
void TextScroller::Update(float dt)
{
if (!strings.size()) return;
if (scrollDirection == HORIZONTAL_SCROLLER)
{
start += mSpeed * dt;
WFont * mFont = resources.GetWFont(fontId);
if (start > mFont->GetStringWidth(mText.c_str()))
{
start = -mWidth;
if (mRandom)
{
currentId = (rand() % strings.size());
}
else
{
currentId++;
if (currentId >= strings.size()) currentId = 0;
}
mText = strings[currentId];
}
}
else
{
// we want to display 2 at a time
ostringstream scrollerText;
if (timer == 0)
{
size_t nbItemsToDisplay = (minimumItems < strings.size() ? minimumItems : strings.size());
for (size_t idx = 0; idx < nbItemsToDisplay; ++idx)
{
size_t index = (currentId + idx) % strings.size();
scrollerText << strings[index];
}
currentId++;
if (currentId >= strings.size()) currentId = 0;
mText = wordWrap(scrollerText.str(), (int) mWidth);
}
timer = ++timer % ((int) mSpeed);
}
start += mScrollSpeed * dt;
WFont * mFont = resources.GetWFont(fontId);
if (start > mFont->GetStringWidth(mText.c_str()))
{
start = -mWidth;
if (mRandom)
{
currentId = (rand() % strings.size());
}
else
{
currentId++;
if (currentId >= strings.size()) currentId = 0;
}
mText = strings[currentId];
}
}
void TextScroller::Render()
{
WFont * mFont = resources.GetWFont(fontId);
if (scrollDirection == HORIZONTAL_SCROLLER)
mFont->DrawString(mText.c_str(), mX, mY, JGETEXT_LEFT, start, mWidth);
else
mFont->DrawString(mText.c_str(), mX, mY);
mFont->DrawString(mText.c_str(), mX, mY, JGETEXT_LEFT, start, mWidth);
}
ostream& TextScroller::toString(ostream& out) const
{
return out << "TextScroller ::: mText : " << mText << " ; tempText : " << tempText << " ; mWidth : " << mWidth
<< " ; mSpeed : " << mSpeed << " ; mX,mY : " << mX << "," << mY << " ; start : " << start << " ; timer : "
<< timer << " ; strings : ?" // << strings
<< " ; currentId : " << currentId << " ; mRandom : " << mRandom;
return out << "TextScroller ::: mText : " << mText
<< " ; tempText : " << tempText
<< " ; mWidth : " << mWidth
<< " ; mSpeed : " << mScrollSpeed
<< " ; mX,mY : " << mX << "," << mY
<< " ; start : " << start
<< " ; timer : " << timer
<< " ; strings : ?"
<< " ; currentId : " << currentId
<< " ; mRandom : " << mRandom;
}
VerticalTextScroller::VerticalTextScroller(int fontId, float x, float y, float width, float height, float scrollSpeed, size_t numItemsShown) :
TextScroller( fontId, x, y, width, scrollSpeed)
{
mHeight = height;
mNbItemsShown = numItemsShown;
marginX = 0;
marginY = 215;
mScrollerInitialized = false;
}
void VerticalTextScroller::Update(float dt)
{
if (!strings.size()) return;
WFont * mFont = resources.GetWFont(fontId);
ostringstream scrollerText;
if ( mScrollerInitialized && timer % 10 == 0 )
{
mY -= 1;
if ( mY < marginY )
mY = marginY + 20;
}
if (timer == 0)
{
mScrollerInitialized = false;
size_t nbItemsToDisplay = (mNbItemsShown < strings.size() ? mNbItemsShown : strings.size());
for (size_t idx = 0; idx < nbItemsToDisplay; ++idx)
{
size_t index = (currentId + idx) % strings.size();
scrollerText << strings[index];
}
currentId++;
if (currentId >= strings.size())
currentId = 0;
mText = wordWrap(scrollerText.str(), mWidth);
mY = marginY + 20;
}
timer = ++timer % ((int) mScrollSpeed);
}
void VerticalTextScroller::Render()
{
WFont * mFont = resources.GetWFont(fontId);
mFont->DrawString(mText.c_str(), mX, mY);
}
// This is a customized word wrap based on pixel width. It tries it's best
// to wrap strings using spaces as delimiters.
// Not sure how this translates into non-english fonts.
std::string VerticalTextScroller::wordWrap(std::string sentence, float width)
{
WFont * mFont = resources.GetWFont(fontId);
float lineWidth = mFont->GetStringWidth( sentence.c_str() );
string retVal = sentence;
if ( lineWidth < width ) return sentence;
int numLines = 1;
int breakIdx = 0;
for( size_t idx = 0; idx < sentence.length(); idx ++ )
{
if ( sentence[idx] == ' ' )
{
string currentSentence = sentence.substr(breakIdx, idx - breakIdx);
float stringLength = mFont->GetStringWidth( currentSentence.c_str() );
if (stringLength >= width)
{
if ( stringLength > width )
{
while ( sentence[idx-1] != ' ' )
idx--;
}
retVal[idx-1] = '\n';
breakIdx = idx;
numLines++;
}
}
}
if ( numLines * mFont->GetHeight() > mHeight )
mScrollerInitialized = true;
return retVal;
}