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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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30
projects/mtg/include/TextScroller.h
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@@ -12,27 +12,47 @@ protected:
string mText;
string tempText;
int fontId;
float mWidth;
float mSpeed;
float mWidth; // width of the text scroller object
float mScrollSpeed;
float mX;
float mY;
float start;
int timer;
size_t minimumItems;
vector<string> strings;
unsigned int currentId;
int mRandom;
int scrollDirection;
public:
TextScroller(int fontId, float x, float y, float width, float speed = 100);
void Add(string text);
void Reset();
void setRandom(int mode = 1);
TextScroller(int fontId, float x, float y, float width, float speed = 30, int scrollerType = 0, size_t _minimumItems = 2);
void Render();
void Update(float dt);
virtual ostream& toString(ostream& out) const;
};
class VerticalTextScroller:
public TextScroller
{
private:
size_t mNbItemsShown;
bool mScrollerInitialized;
float mHeight; // maximum height availble for display
int marginX;
int marginY; // margin used to allow text to scroll off screen without
// affecting look and feel. Should be enough
// for at least one line of text ( marginY)
protected:
string wordWrap(string sentence, float width);
public:
VerticalTextScroller(int fontId, float x, float y, float width, float height, float scrollSpeed = 30, size_t _minimumItems = 1);
void Render();
void Update(float dt);
};
#endif

2
projects/mtg/src/DeckEditorMenu.cpp
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@@ -36,7 +36,7 @@ DeckEditorMenu::DeckEditorMenu(int id, JGuiListener* listener, int fontId, const
float scrollerWidth = 80;
SAFE_DELETE(mScroller); // need to delete the scroller init in the base class
mScroller = NEW TextScroller(Fonts::MAIN_FONT, 40, 230, scrollerWidth, 100, 1, 1);
mScroller = NEW VerticalTextScroller(Fonts::MAIN_FONT, 40, 230, scrollerWidth, 100);
}

17
projects/mtg/src/DeckMenu.cpp
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@@ -18,7 +18,6 @@ namespace
const float kDescriptionVerticalBoxPadding = 5;
const float kDescriptionHorizontalBoxPadding = 5;
const float kDescriptiveTextFontScale = 0.85f;
const float kDefaultFontScale = 1.0f;
const int DETAILED_INFO_THRESHOLD = 20;
@@ -71,8 +70,9 @@ JGuiController(id, listener), fontId(fontId), mShowDetailsScreen( showDetailsOve
menuInitialized = false;
float scrollerWidth = 60;
mScroller = NEW TextScroller(Fonts::MAIN_FONT, 20, 235, scrollerWidth, 100, 1, 1);
float scrollerWidth = 200.0f;
float scrollerHeight = 28.0f;
mScroller = NEW VerticalTextScroller(Fonts::MAIN_FONT, 14, 235, scrollerWidth, 28.0f, 100);
mAutoTranslate = true;
maxItems = 7;
@@ -214,7 +214,6 @@ void DeckMenu::Render()
}
// fill in the description part of the screen
string text = currentMenuItem->desc;
mainFont->SetScale(kDescriptiveTextFontScale);
mainFont->DrawString(text.c_str(), descX, descY);
mFont->SetColor(ARGB(255,255,255,255));
@@ -232,22 +231,18 @@ void DeckMenu::Render()
{
mFont->SetColor(ARGB(150,255,255,255));
}
mFont->SetScale(kDefaultFontScale);
currentMenuItem->RenderWithOffset(-kLineHeight * startId);
}
}
RenderBackground();
mFont->SetScale(kDescriptiveTextFontScale);
mScroller->Render();
mFont->SetScale(kDefaultFontScale);
if (!title.empty())
{
mFont->SetColor(ARGB(255,255,255,255));
mFont->DrawString(title.c_str(), titleX, titleY, JGETEXT_CENTER);
}
mScroller->Render();
RenderBackground();
}
void DeckMenu::Update(float dt)

2
projects/mtg/src/GameStateMenu.cpp
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@@ -124,7 +124,7 @@ void GameStateMenu::Create()
{
currentState = MENU_STATE_MAJOR_LANG | MENU_STATE_MINOR_NONE;
}
scroller = NEW TextScroller(Fonts::MAIN_FONT, SCREEN_WIDTH / 2 - 90, SCREEN_HEIGHT - 17, 180);
scroller = NEW TextScroller(Fonts::MAIN_FONT, SCREEN_WIDTH / 2 - 90, SCREEN_HEIGHT - 17, 200);
scrollerSet = 0;
splashTex = NULL;

8
projects/mtg/src/SimplePopup.cpp
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@@ -16,11 +16,11 @@
SimplePopup::SimplePopup(int id, JGuiListener* listener, const int fontId, const char * _title, DeckMetaData* deckMetaData, MTGAllCards * collection) :
JGuiController(id, listener), mFontId(fontId), mCollection(collection)
{
mX = 18;
mX = 19;
mY = 66;
mWidth = 180.0f;
mTitle = _title;
mMaxLines = 11;
mMaxLines = 12;
mTextFont = resources.GetWFont(fontId);
this->mCount = 1; // a hack to ensure the menus do book keeping correctly. Since we aren't adding items to the menu, this is required
@@ -35,7 +35,6 @@ void SimplePopup::Render()
JRenderer *r = JRenderer::GetInstance();
string detailedInformation = getDetailedInformation(mDeckInformation->getFilename());
mTextFont->SetScale(0.85f);
const float textHeight = mTextFont->GetHeight() * mMaxLines;
r->DrawRoundRect(mX, mY, mWidth, textHeight, 2.0f, ARGB( 255, 125, 255, 0) );
r->FillRoundRect(mX, mY, mWidth, textHeight, 2.0f, ARGB( 255, 0, 0, 0 ) );
@@ -45,10 +44,11 @@ void SimplePopup::Render()
#if 0
drawBoundingBox( mX, mY, mWidth, textHeight );
#endif
mTextFont->DrawString(detailedInformation.c_str(), mX + 20 , mY + 15);
mTextFont->DrawString(detailedInformation.c_str(), mX + 9 , mY + 15);
}
// draws a bounding box around the popup.
void SimplePopup::drawBoundingBox( float x, float y, float width, float height )
{
JRenderer *r = JRenderer::GetInstance();

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;
}