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openmw-tes3mp/apps/openmw/mwgui/bookpage.cpp

1404 lines
41 KiB
C++

#include "bookpage.hpp"
#include "MyGUI_FontManager.h"
#include "MyGUI_RenderItem.h"
#include "MyGUI_RenderManager.h"
#include "MyGUI_TextureUtility.h"
#include "MyGUI_FactoryManager.h"
#include <components/misc/utf8stream.hpp>
namespace MWGui
{
struct TypesetBookImpl;
class PageDisplay;
class BookPageImpl;
static bool ucsSpace (int codePoint);
static bool ucsLineBreak (int codePoint);
static bool ucsCarriageReturn (int codePoint);
static bool ucsBreakingSpace (int codePoint);
struct BookTypesetter::Style { virtual ~Style () {} };
struct TypesetBookImpl : TypesetBook
{
typedef std::vector <uint8_t> Content;
typedef std::list <Content> Contents;
typedef Utf8Stream::Point Utf8Point;
typedef std::pair <Utf8Point, Utf8Point> Range;
struct StyleImpl : BookTypesetter::Style
{
MyGUI::IFont* mFont;
MyGUI::Colour mHotColour;
MyGUI::Colour mActiveColour;
MyGUI::Colour mNormalColour;
InteractiveId mInteractiveId;
bool match (MyGUI::IFont* tstFont, const MyGUI::Colour& tstHotColour, const MyGUI::Colour& tstActiveColour,
const MyGUI::Colour& tstNormalColour, intptr_t tstInteractiveId)
{
return (mFont == tstFont) &&
partal_match (tstHotColour, tstActiveColour, tstNormalColour, tstInteractiveId);
}
bool match (char const * tstFont, const MyGUI::Colour& tstHotColour, const MyGUI::Colour& tstActiveColour,
const MyGUI::Colour& tstNormalColour, intptr_t tstInteractiveId)
{
return (mFont->getResourceName () == tstFont) &&
partal_match (tstHotColour, tstActiveColour, tstNormalColour, tstInteractiveId);
}
bool partal_match (const MyGUI::Colour& tstHotColour, const MyGUI::Colour& tstActiveColour,
const MyGUI::Colour& tstNormalColour, intptr_t tstInteractiveId)
{
return
(mHotColour == tstHotColour ) &&
(mActiveColour == tstActiveColour ) &&
(mNormalColour == tstNormalColour ) &&
(mInteractiveId == tstInteractiveId ) ;
}
};
typedef std::list <StyleImpl> Styles;
struct Run
{
StyleImpl* mStyle;
Range mRange;
int mLeft, mRight;
int mPrintableChars;
};
typedef std::vector <Run> Runs;
struct Line
{
Runs mRuns;
MyGUI::IntRect mRect;
};
typedef std::vector <Line> Lines;
struct Section
{
Lines mLines;
MyGUI::IntRect mRect;
};
typedef std::vector <Section> Sections;
// Holds "top" and "bottom" vertical coordinates in the source text.
// A page is basically a "window" into a portion of the source text, similar to a ScrollView.
typedef std::pair <int, int> Page;
typedef std::vector <Page> Pages;
Pages mPages;
Sections mSections;
Contents mContents;
Styles mStyles;
MyGUI::IntRect mRect;
virtual ~TypesetBookImpl () {}
Range addContent (BookTypesetter::Utf8Span text)
{
Contents::iterator i = mContents.insert (mContents.end (), Content (text.first, text.second));
if (i->empty())
return Range (Utf8Point (NULL), Utf8Point (NULL));
Utf8Point begin = &i->front ();
Utf8Point end = &i->front () + i->size ();
return Range (begin, end);
}
size_t pageCount () const { return mPages.size (); }
std::pair <unsigned int, unsigned int> getSize () const
{
return std::make_pair (mRect.width (), mRect.height ());
}
template <typename Visitor>
void visitRuns (int top, int bottom, MyGUI::IFont* Font, Visitor const & visitor) const
{
for (Sections::const_iterator i = mSections.begin (); i != mSections.end (); ++i)
{
if (top >= mRect.bottom || bottom <= i->mRect.top)
continue;
for (Lines::const_iterator j = i->mLines.begin (); j != i->mLines.end (); ++j)
{
if (top >= j->mRect.bottom || bottom <= j->mRect.top)
continue;
for (Runs::const_iterator k = j->mRuns.begin (); k != j->mRuns.end (); ++k)
if (!Font || k->mStyle->mFont == Font)
visitor (*i, *j, *k);
}
}
}
template <typename Visitor>
void visitRuns (int top, int bottom, Visitor const & visitor) const
{
visitRuns (top, bottom, NULL, visitor);
}
/// hit test with a margin for error. only hits on interactive text fragments are reported.
StyleImpl * hitTestWithMargin (int left, int top)
{
StyleImpl * hit = hitTest(left, top);
if (hit && hit->mInteractiveId != 0)
return hit;
const int maxMargin = 10;
for (int margin=1; margin < maxMargin; ++margin)
{
for (int i=0; i<4; ++i)
{
if (i==0)
hit = hitTest(left, top-margin);
else if (i==1)
hit = hitTest(left, top+margin);
else if (i==2)
hit = hitTest(left-margin, top);
else
hit = hitTest(left+margin, top);
if (hit && hit->mInteractiveId != 0)
return hit;
}
}
return NULL;
}
StyleImpl * hitTest (int left, int top) const
{
for (Sections::const_iterator i = mSections.begin (); i != mSections.end (); ++i)
{
if (top < i->mRect.top || top >= i->mRect.bottom)
continue;
int left1 = left - i->mRect.left;
for (Lines::const_iterator j = i->mLines.begin (); j != i->mLines.end (); ++j)
{
if (top < j->mRect.top || top >= j->mRect.bottom)
continue;
int left2 = left1 - j->mRect.left;
for (Runs::const_iterator k = j->mRuns.begin (); k != j->mRuns.end (); ++k)
{
if (left2 < k->mLeft || left2 >= k->mRight)
continue;
return k->mStyle;
}
}
}
return nullptr;
}
MyGUI::IFont* affectedFont (StyleImpl* style)
{
for (Styles::iterator i = mStyles.begin (); i != mStyles.end (); ++i)
if (&*i == style)
return i->mFont;
return NULL;
}
struct Typesetter;
};
struct TypesetBookImpl::Typesetter : BookTypesetter
{
struct PartialText {
StyleImpl *mStyle;
Utf8Stream::Point mBegin;
Utf8Stream::Point mEnd;
int mWidth;
PartialText( StyleImpl *style, Utf8Stream::Point begin, Utf8Stream::Point end, int width) :
mStyle(style), mBegin(begin), mEnd(end), mWidth(width)
{}
};
typedef TypesetBookImpl Book;
typedef std::shared_ptr <Book> BookPtr;
typedef std::vector<PartialText>::const_iterator PartialTextConstIterator;
int mPageWidth;
int mPageHeight;
BookPtr mBook;
Section * mSection;
Line * mLine;
Run * mRun;
std::vector <Alignment> mSectionAlignment;
std::vector <PartialText> mPartialWhitespace;
std::vector <PartialText> mPartialWord;
Book::Content const * mCurrentContent;
Alignment mCurrentAlignment;
Typesetter (size_t width, size_t height) :
mPageWidth (width), mPageHeight(height),
mSection (NULL), mLine (NULL), mRun (NULL),
mCurrentContent (NULL),
mCurrentAlignment (AlignLeft)
{
mBook = std::make_shared <Book> ();
}
virtual ~Typesetter ()
{
}
Style * createStyle (char const * fontName, const Colour& fontColour)
{
if (strcmp(fontName, "") == 0)
return createStyle(MyGUI::FontManager::getInstance().getDefaultFont().c_str(), fontColour);
for (Styles::iterator i = mBook->mStyles.begin (); i != mBook->mStyles.end (); ++i)
if (i->match (fontName, fontColour, fontColour, fontColour, 0))
return &*i;
MyGUI::IFont* font = MyGUI::FontManager::getInstance().getByName(fontName);
if (!font)
throw std::runtime_error(std::string("can't find font ") + fontName);
StyleImpl & style = *mBook->mStyles.insert (mBook->mStyles.end (), StyleImpl ());
style.mFont = font;
style.mHotColour = fontColour;
style.mActiveColour = fontColour;
style.mNormalColour = fontColour;
style.mInteractiveId = 0;
return &style;
}
Style* createHotStyle (Style* baseStyle, const Colour& normalColour, const Colour& hoverColour,
const Colour& activeColour, InteractiveId id, bool unique)
{
StyleImpl* BaseStyle = static_cast <StyleImpl*> (baseStyle);
if (!unique)
for (Styles::iterator i = mBook->mStyles.begin (); i != mBook->mStyles.end (); ++i)
if (i->match (BaseStyle->mFont, hoverColour, activeColour, normalColour, id))
return &*i;
StyleImpl & style = *mBook->mStyles.insert (mBook->mStyles.end (), StyleImpl ());
style.mFont = BaseStyle->mFont;
style.mHotColour = hoverColour;
style.mActiveColour = activeColour;
style.mNormalColour = normalColour;
style.mInteractiveId = id;
return &style;
}
void write (Style * style, Utf8Span text)
{
Range range = mBook->addContent (text);
writeImpl (static_cast <StyleImpl*> (style), range.first, range.second);
}
intptr_t addContent (Utf8Span text, bool select)
{
add_partial_text();
Contents::iterator i = mBook->mContents.insert (mBook->mContents.end (), Content (text.first, text.second));
if (select)
mCurrentContent = &(*i);
return reinterpret_cast <intptr_t> (&(*i));
}
void selectContent (intptr_t contentHandle)
{
add_partial_text();
mCurrentContent = reinterpret_cast <Content const *> (contentHandle);
}
void write (Style * style, size_t begin, size_t end)
{
assert (mCurrentContent != NULL);
assert (end <= mCurrentContent->size ());
assert (begin <= mCurrentContent->size ());
Utf8Point begin_ = &mCurrentContent->front () + begin;
Utf8Point end_ = &mCurrentContent->front () + end ;
writeImpl (static_cast <StyleImpl*> (style), begin_, end_);
}
void lineBreak (float margin)
{
assert (margin == 0); //TODO: figure out proper behavior here...
add_partial_text();
mRun = NULL;
mLine = NULL;
}
void sectionBreak (int margin)
{
add_partial_text();
if (mBook->mSections.size () > 0)
{
mRun = NULL;
mLine = NULL;
mSection = NULL;
if (mBook->mRect.bottom < (mBook->mSections.back ().mRect.bottom + margin))
mBook->mRect.bottom = (mBook->mSections.back ().mRect.bottom + margin);
}
}
void setSectionAlignment (Alignment sectionAlignment)
{
add_partial_text();
if (mSection != NULL)
mSectionAlignment.back () = sectionAlignment;
mCurrentAlignment = sectionAlignment;
}
TypesetBook::Ptr complete ()
{
int curPageStart = 0;
int curPageStop = 0;
add_partial_text();
std::vector <Alignment>::iterator sa = mSectionAlignment.begin ();
for (Sections::iterator i = mBook->mSections.begin (); i != mBook->mSections.end (); ++i, ++sa)
{
// apply alignment to individual lines...
for (Lines::iterator j = i->mLines.begin (); j != i->mLines.end (); ++j)
{
int width = j->mRect.width ();
int excess = mPageWidth - width;
switch (*sa)
{
default:
case AlignLeft: j->mRect.left = 0; break;
case AlignCenter: j->mRect.left = excess/2; break;
case AlignRight: j->mRect.left = excess; break;
}
j->mRect.right = j->mRect.left + width;
}
if (curPageStop == curPageStart)
{
curPageStart = i->mRect.top;
curPageStop = i->mRect.top;
}
int spaceLeft = mPageHeight - (curPageStop - curPageStart);
int sectionHeight = i->mRect.height ();
// This is NOT equal to i->mRect.height(), which doesn't account for section breaks.
int spaceRequired = (i->mRect.bottom - curPageStop);
if (curPageStart == curPageStop) // If this is a new page, the section break is not needed
spaceRequired = i->mRect.height();
if (spaceRequired <= mPageHeight)
{
if (spaceRequired > spaceLeft)
{
// The section won't completely fit on the current page. Finish the current page and start a new one.
assert (curPageStart != curPageStop);
mBook->mPages.push_back (Page (curPageStart, curPageStop));
curPageStart = i->mRect.top;
curPageStop = i->mRect.bottom;
}
else
curPageStop = i->mRect.bottom;
}
else
{
// The section won't completely fit on the current page. Finish the current page and start a new one.
mBook->mPages.push_back (Page (curPageStart, curPageStop));
curPageStart = i->mRect.top;
curPageStop = i->mRect.bottom;
//split section
int sectionHeightLeft = sectionHeight;
while (sectionHeightLeft >= mPageHeight)
{
// Adjust to the top of the first line that does not fit on the current page anymore
int splitPos = curPageStop;
for (Lines::iterator j = i->mLines.begin (); j != i->mLines.end (); ++j)
{
if (j->mRect.bottom > curPageStart + mPageHeight)
{
splitPos = j->mRect.top;
break;
}
}
mBook->mPages.push_back (Page (curPageStart, splitPos));
curPageStart = splitPos;
curPageStop = splitPos;
sectionHeightLeft = (i->mRect.bottom - splitPos);
}
curPageStop = i->mRect.bottom;
}
}
if (curPageStart != curPageStop)
mBook->mPages.push_back (Page (curPageStart, curPageStop));
return mBook;
}
void writeImpl (StyleImpl * style, Utf8Stream::Point _begin, Utf8Stream::Point _end)
{
Utf8Stream stream (_begin, _end);
while (!stream.eof ())
{
if (ucsLineBreak (stream.peek ()))
{
add_partial_text();
stream.consume ();
mLine = NULL, mRun = NULL;
continue;
}
if (ucsBreakingSpace (stream.peek ()) && !mPartialWord.empty())
add_partial_text();
int word_width = 0;
int space_width = 0;
Utf8Stream::Point lead = stream.current ();
while (!stream.eof () && !ucsLineBreak (stream.peek ()) && ucsBreakingSpace (stream.peek ()))
{
MyGUI::GlyphInfo* gi = style->mFont->getGlyphInfo (stream.peek ());
if (gi)
space_width += static_cast<int>(gi->advance + gi->bearingX);
stream.consume ();
}
Utf8Stream::Point origin = stream.current ();
while (!stream.eof () && !ucsLineBreak (stream.peek ()) && !ucsBreakingSpace (stream.peek ()))
{
MyGUI::GlyphInfo* gi = style->mFont->getGlyphInfo (stream.peek ());
if (gi)
word_width += static_cast<int>(gi->advance + gi->bearingX);
stream.consume ();
}
Utf8Stream::Point extent = stream.current ();
if (lead == extent)
break;
if ( lead != origin )
mPartialWhitespace.push_back (PartialText (style, lead, origin, space_width));
if ( origin != extent )
mPartialWord.push_back (PartialText (style, origin, extent, word_width));
}
}
void add_partial_text ()
{
if (mPartialWhitespace.empty() && mPartialWord.empty())
return;
int space_width = 0;
int word_width = 0;
for (PartialTextConstIterator i = mPartialWhitespace.begin (); i != mPartialWhitespace.end (); ++i)
space_width += i->mWidth;
for (PartialTextConstIterator i = mPartialWord.begin (); i != mPartialWord.end (); ++i)
word_width += i->mWidth;
int left = mLine ? mLine->mRect.right : 0;
if (left + space_width + word_width > mPageWidth)
{
mLine = NULL, mRun = NULL, left = 0;
}
else
{
for (PartialTextConstIterator i = mPartialWhitespace.begin (); i != mPartialWhitespace.end (); ++i)
{
int top = mLine ? mLine->mRect.top : mBook->mRect.bottom;
int line_height = i->mStyle->mFont->getDefaultHeight ();
append_run ( i->mStyle, i->mBegin, i->mEnd, 0, left + i->mWidth, top + line_height);
left = mLine->mRect.right;
}
}
for (PartialTextConstIterator i = mPartialWord.begin (); i != mPartialWord.end (); ++i)
{
int top = mLine ? mLine->mRect.top : mBook->mRect.bottom;
int line_height = i->mStyle->mFont->getDefaultHeight ();
append_run (i->mStyle, i->mBegin, i->mEnd, i->mEnd - i->mBegin, left + i->mWidth, top + line_height);
left = mLine->mRect.right;
}
mPartialWhitespace.clear();
mPartialWord.clear();
}
void append_run (StyleImpl * style, Utf8Stream::Point begin, Utf8Stream::Point end, int pc, int right, int bottom)
{
if (mSection == NULL)
{
mBook->mSections.push_back (Section ());
mSection = &mBook->mSections.back ();
mSection->mRect = MyGUI::IntRect (0, mBook->mRect.bottom, 0, mBook->mRect.bottom);
mSectionAlignment.push_back (mCurrentAlignment);
}
if (mLine == NULL)
{
mSection->mLines.push_back (Line ());
mLine = &mSection->mLines.back ();
mLine->mRect = MyGUI::IntRect (0, mSection->mRect.bottom, 0, mBook->mRect.bottom);
}
if (mBook->mRect.right < right)
mBook->mRect.right = right;
if (mBook->mRect.bottom < bottom)
mBook->mRect.bottom = bottom;
if (mSection->mRect.right < right)
mSection->mRect.right = right;
if (mSection->mRect.bottom < bottom)
mSection->mRect.bottom = bottom;
if (mLine->mRect.right < right)
mLine->mRect.right = right;
if (mLine->mRect.bottom < bottom)
mLine->mRect.bottom = bottom;
if (mRun == NULL || mRun->mStyle != style || mRun->mRange.second != begin)
{
int left = mRun ? mRun->mRight : mLine->mRect.left;
mLine->mRuns.push_back (Run ());
mRun = &mLine->mRuns.back ();
mRun->mStyle = style;
mRun->mLeft = left;
mRun->mRight = right;
mRun->mRange.first = begin;
mRun->mRange.second = end;
mRun->mPrintableChars = pc;
//Run->Locale = Locale;
}
else
{
mRun->mRight = right;
mRun->mRange.second = end;
mRun->mPrintableChars += pc;
}
}
};
BookTypesetter::Ptr BookTypesetter::create (int pageWidth, int pageHeight)
{
return std::make_shared <TypesetBookImpl::Typesetter> (pageWidth, pageHeight);
}
namespace
{
struct RenderXform
{
public:
float clipTop;
float clipLeft;
float clipRight;
float clipBottom;
float absoluteLeft;
float absoluteTop;
float leftOffset;
float topOffset;
float pixScaleX;
float pixScaleY;
float hOffset;
float vOffset;
RenderXform (MyGUI::ICroppedRectangle* croppedParent, MyGUI::RenderTargetInfo const & renderTargetInfo)
{
clipTop = static_cast<float>(croppedParent->_getMarginTop());
clipLeft = static_cast<float>(croppedParent->_getMarginLeft ());
clipRight = static_cast<float>(croppedParent->getWidth () - croppedParent->_getMarginRight ());
clipBottom = static_cast<float>(croppedParent->getHeight() - croppedParent->_getMarginBottom());
absoluteLeft = static_cast<float>(croppedParent->getAbsoluteLeft());
absoluteTop = static_cast<float>(croppedParent->getAbsoluteTop());
leftOffset = static_cast<float>(renderTargetInfo.leftOffset);
topOffset = static_cast<float>(renderTargetInfo.topOffset);
pixScaleX = renderTargetInfo.pixScaleX;
pixScaleY = renderTargetInfo.pixScaleY;
hOffset = renderTargetInfo.hOffset;
vOffset = renderTargetInfo.vOffset;
}
bool clip (MyGUI::FloatRect & vr, MyGUI::FloatRect & tr)
{
if (vr.bottom <= clipTop || vr.right <= clipLeft ||
vr.left >= clipRight || vr.top >= clipBottom )
return false;
if (vr.top < clipTop)
{
tr.top += tr.height () * (clipTop - vr.top) / vr.height ();
vr.top = clipTop;
}
if (vr.left < clipLeft)
{
tr.left += tr.width () * (clipLeft - vr.left) / vr.width ();
vr.left = clipLeft;
}
if (vr.right > clipRight)
{
tr.right -= tr.width () * (vr.right - clipRight) / vr.width ();
vr.right = clipRight;
}
if (vr.bottom > clipBottom)
{
tr.bottom -= tr.height () * (vr.bottom - clipBottom) / vr.height ();
vr.bottom = clipBottom;
}
return true;
}
MyGUI::FloatPoint operator () (MyGUI::FloatPoint pt)
{
pt.left = absoluteLeft - leftOffset + pt.left;
pt.top = absoluteTop - topOffset + pt.top;
pt.left = +(((pixScaleX * pt.left + hOffset) * 2.0f) - 1.0f);
pt.top = -(((pixScaleY * pt.top + vOffset) * 2.0f) - 1.0f);
return pt;
}
};
struct GlyphStream
{
float mZ;
uint32_t mC;
MyGUI::IFont* mFont;
MyGUI::FloatPoint mOrigin;
MyGUI::FloatPoint mCursor;
MyGUI::Vertex* mVertices;
RenderXform mRenderXform;
MyGUI::VertexColourType mVertexColourType;
GlyphStream (MyGUI::IFont* font, float left, float top, float Z,
MyGUI::Vertex* vertices, RenderXform const & renderXform) :
mZ(Z),
mC(0), mFont (font), mOrigin (left, top),
mVertices (vertices),
mRenderXform (renderXform)
{
mVertexColourType = MyGUI::RenderManager::getInstance().getVertexFormat();
}
~GlyphStream ()
{
}
MyGUI::Vertex* end () const { return mVertices; }
void reset (float left, float top, MyGUI::Colour colour)
{
mC = MyGUI::texture_utility::toColourARGB(colour) | 0xFF000000;
MyGUI::texture_utility::convertColour(mC, mVertexColourType);
mCursor.left = mOrigin.left + left;
mCursor.top = mOrigin.top + top;
}
void emitGlyph (wchar_t ch)
{
MyGUI::GlyphInfo* gi = mFont->getGlyphInfo (ch);
if (!gi)
return;
MyGUI::FloatRect vr;
vr.left = mCursor.left + gi->bearingX;
vr.top = mCursor.top + gi->bearingY;
vr.right = vr.left + gi->width;
vr.bottom = vr.top + gi->height;
MyGUI::FloatRect tr = gi->uvRect;
if (mRenderXform.clip (vr, tr))
quad (vr, tr);
mCursor.left += gi->bearingX + gi->advance;
}
void emitSpace (wchar_t ch)
{
MyGUI::GlyphInfo* gi = mFont->getGlyphInfo (ch);
if (gi)
mCursor.left += gi->bearingX + gi->advance;
}
private:
void quad (const MyGUI::FloatRect& vr, const MyGUI::FloatRect& tr)
{
vertex (vr.left, vr.top, tr.left, tr.top);
vertex (vr.right, vr.top, tr.right, tr.top);
vertex (vr.left, vr.bottom, tr.left, tr.bottom);
vertex (vr.right, vr.top, tr.right, tr.top);
vertex (vr.left, vr.bottom, tr.left, tr.bottom);
vertex (vr.right, vr.bottom, tr.right, tr.bottom);
}
void vertex (float x, float y, float u, float v)
{
MyGUI::FloatPoint pt = mRenderXform (MyGUI::FloatPoint (x, y));
mVertices->x = pt.left;
mVertices->y = pt.top ;
mVertices->z = mZ;
mVertices->u = u;
mVertices->v = v;
mVertices->colour = mC;
++mVertices;
}
};
}
class PageDisplay : public MyGUI::ISubWidgetText
{
MYGUI_RTTI_DERIVED(PageDisplay)
protected:
typedef TypesetBookImpl::Section Section;
typedef TypesetBookImpl::Line Line;
typedef TypesetBookImpl::Run Run;
bool mIsPageReset;
size_t mPage;
struct TextFormat : ISubWidget
{
typedef MyGUI::IFont* Id;
Id mFont;
int mCountVertex;
MyGUI::ITexture* mTexture;
MyGUI::RenderItem* mRenderItem;
PageDisplay * mDisplay;
TextFormat (MyGUI::IFont* id, PageDisplay * display) :
mFont (id),
mCountVertex (0),
mTexture (NULL),
mRenderItem (NULL),
mDisplay (display)
{
}
void createDrawItem (MyGUI::ILayerNode* node)
{
assert (mRenderItem == NULL);
if (mTexture != NULL)
{
mRenderItem = node->addToRenderItem(mTexture, false, false);
mRenderItem->addDrawItem(this, mCountVertex);
}
}
void destroyDrawItem (MyGUI::ILayerNode* node)
{
assert (mTexture != NULL ? mRenderItem != NULL : mRenderItem == NULL);
if (mTexture != NULL)
{
mRenderItem->removeDrawItem (this);
mRenderItem = NULL;
}
}
void doRender() { mDisplay->doRender (*this); }
// this isn't really a sub-widget, its just a "drawitem" which
// should have its own interface
void createDrawItem(MyGUI::ITexture* _texture, MyGUI::ILayerNode* _node) {}
void destroyDrawItem() {};
};
void resetPage()
{
mIsPageReset = true;
mPage = 0;
}
void setPage(size_t page)
{
mIsPageReset = false;
mPage = page;
}
bool isPageDifferent(size_t page)
{
return mIsPageReset || (mPage != page);
}
public:
typedef TypesetBookImpl::StyleImpl Style;
typedef std::map <TextFormat::Id, std::unique_ptr<TextFormat>> ActiveTextFormats;
int mViewTop;
int mViewBottom;
Style* mFocusItem;
bool mItemActive;
MyGUI::MouseButton mLastDown;
std::function <void (intptr_t)> mLinkClicked;
std::shared_ptr <TypesetBookImpl> mBook;
MyGUI::ILayerNode* mNode;
ActiveTextFormats mActiveTextFormats;
PageDisplay ()
{
resetPage ();
mViewTop = 0;
mViewBottom = 0;
mFocusItem = NULL;
mItemActive = false;
mNode = NULL;
}
void dirtyFocusItem ()
{
if (mFocusItem != 0)
{
MyGUI::IFont* Font = mBook->affectedFont (mFocusItem);
ActiveTextFormats::iterator i = mActiveTextFormats.find (Font);
if (mNode)
mNode->outOfDate (i->second->mRenderItem);
}
}
void onMouseLostFocus ()
{
if (!mBook)
return;
dirtyFocusItem ();
mFocusItem = 0;
mItemActive = false;
}
void onMouseMove (int left, int top)
{
if (!mBook)
return;
left -= mCroppedParent->getAbsoluteLeft ();
top -= mCroppedParent->getAbsoluteTop ();
Style * hit = mBook->hitTestWithMargin (left, mViewTop + top);
if (mLastDown == MyGUI::MouseButton::None)
{
if (hit != mFocusItem)
{
dirtyFocusItem ();
mFocusItem = hit;
mItemActive = false;
dirtyFocusItem ();
}
}
else
if (mFocusItem != 0)
{
bool newItemActive = hit == mFocusItem;
if (newItemActive != mItemActive)
{
mItemActive = newItemActive;
dirtyFocusItem ();
}
}
}
void onMouseButtonPressed (int left, int top, MyGUI::MouseButton id)
{
if (!mBook)
return;
// work around inconsistency in MyGUI where the mouse press coordinates aren't
// transformed by the current Layer (even though mouse *move* events are).
MyGUI::IntPoint pos (left, top);
#if MYGUI_VERSION < MYGUI_DEFINE_VERSION(3,2,3)
pos = mNode->getLayer()->getPosition(left, top);
#endif
pos.left -= mCroppedParent->getAbsoluteLeft ();
pos.top -= mCroppedParent->getAbsoluteTop ();
if (mLastDown == MyGUI::MouseButton::None)
{
mFocusItem = mBook->hitTestWithMargin (pos.left, mViewTop + pos.top);
mItemActive = true;
dirtyFocusItem ();
mLastDown = id;
}
}
void onMouseButtonReleased(int left, int top, MyGUI::MouseButton id)
{
if (!mBook)
return;
// work around inconsistency in MyGUI where the mouse release coordinates aren't
// transformed by the current Layer (even though mouse *move* events are).
MyGUI::IntPoint pos (left, top);
#if MYGUI_VERSION < MYGUI_DEFINE_VERSION(3,2,3)
pos = mNode->getLayer()->getPosition(left, top);
#endif
pos.left -= mCroppedParent->getAbsoluteLeft ();
pos.top -= mCroppedParent->getAbsoluteTop ();
if (mLastDown == id)
{
Style * item = mBook->hitTestWithMargin (pos.left, mViewTop + pos.top);
bool clicked = mFocusItem == item;
mItemActive = false;
dirtyFocusItem ();
mLastDown = MyGUI::MouseButton::None;
if (clicked && mLinkClicked && item && item->mInteractiveId != 0)
mLinkClicked (item->mInteractiveId);
}
}
void showPage (TypesetBook::Ptr book, size_t newPage)
{
std::shared_ptr <TypesetBookImpl> newBook = std::dynamic_pointer_cast <TypesetBookImpl> (book);
if (mBook != newBook)
{
mFocusItem = nullptr;
mItemActive = 0;
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
{
if (mNode != NULL)
i->second->destroyDrawItem (mNode);
i->second.reset();
}
mActiveTextFormats.clear ();
if (newBook != nullptr)
{
createActiveFormats (newBook);
mBook = newBook;
setPage (newPage);
if (newPage < mBook->mPages.size ())
{
mViewTop = mBook->mPages [newPage].first;
mViewBottom = mBook->mPages [newPage].second;
}
else
{
mViewTop = 0;
mViewBottom = 0;
}
}
else
{
mBook.reset ();
resetPage ();
mViewTop = 0;
mViewBottom = 0;
}
}
else
if (mBook && isPageDifferent (newPage))
{
if (mNode != NULL)
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
mNode->outOfDate(i->second->mRenderItem);
setPage (newPage);
if (newPage < mBook->mPages.size ())
{
mViewTop = mBook->mPages [newPage].first;
mViewBottom = mBook->mPages [newPage].second;
}
else
{
mViewTop = 0;
mViewBottom = 0;
}
}
}
struct CreateActiveFormat
{
PageDisplay * this_;
CreateActiveFormat (PageDisplay * this_) : this_ (this_) {}
void operator () (Section const & section, Line const & line, Run const & run) const
{
MyGUI::IFont* Font = run.mStyle->mFont;
ActiveTextFormats::iterator j = this_->mActiveTextFormats.find (Font);
if (j == this_->mActiveTextFormats.end ())
{
std::unique_ptr<TextFormat> textFormat(new TextFormat (Font, this_));
textFormat->mTexture = Font->getTextureFont ();
j = this_->mActiveTextFormats.insert (std::make_pair (Font, std::move(textFormat))).first;
}
j->second->mCountVertex += run.mPrintableChars * 6;
}
};
void createActiveFormats (std::shared_ptr <TypesetBookImpl> newBook)
{
newBook->visitRuns (0, 0x7FFFFFFF, CreateActiveFormat (this));
if (mNode != NULL)
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
i->second->createDrawItem (mNode);
}
void setVisible (bool newVisible)
{
if (mVisible == newVisible)
return;
mVisible = newVisible;
if (mVisible)
{
// reset input state
mLastDown = MyGUI::MouseButton::None;
mFocusItem = nullptr;
mItemActive = 0;
}
if (nullptr != mNode)
{
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
mNode->outOfDate(i->second->mRenderItem);
}
}
void createDrawItem(MyGUI::ITexture* texture, MyGUI::ILayerNode* node)
{
mNode = node;
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
i->second->createDrawItem (node);
}
struct RenderRun
{
PageDisplay * this_;
GlyphStream &glyphStream;
RenderRun (PageDisplay * this_, GlyphStream &glyphStream) :
this_(this_), glyphStream (glyphStream)
{
}
void operator () (Section const & section, Line const & line, Run const & run) const
{
bool isActive = run.mStyle->mInteractiveId && (run.mStyle == this_->mFocusItem);
MyGUI::Colour colour = isActive ? (this_->mItemActive ? run.mStyle->mActiveColour: run.mStyle->mHotColour) : run.mStyle->mNormalColour;
glyphStream.reset(static_cast<float>(section.mRect.left + line.mRect.left + run.mLeft), static_cast<float>(line.mRect.top), colour);
Utf8Stream stream (run.mRange);
while (!stream.eof ())
{
Utf8Stream::UnicodeChar code_point = stream.consume ();
if (ucsCarriageReturn (code_point))
continue;
if (!ucsSpace (code_point))
glyphStream.emitGlyph (code_point);
else
glyphStream.emitSpace (code_point);
}
}
};
/*
queue up rendering operations for this text format
*/
void doRender(TextFormat & textFormat)
{
if (!mVisible)
return;
MyGUI::Vertex* vertices = textFormat.mRenderItem->getCurrentVertexBuffer();
RenderXform renderXform (mCroppedParent, textFormat.mRenderItem->getRenderTarget()->getInfo());
GlyphStream glyphStream(textFormat.mFont, static_cast<float>(mCoord.left), static_cast<float>(mCoord.top - mViewTop),
-1 /*mNode->getNodeDepth()*/, vertices, renderXform);
int visit_top = (std::max) (mViewTop, mViewTop + int (renderXform.clipTop ));
int visit_bottom = (std::min) (mViewBottom, mViewTop + int (renderXform.clipBottom));
mBook->visitRuns (visit_top, visit_bottom, textFormat.mFont, RenderRun (this, glyphStream));
textFormat.mRenderItem->setLastVertexCount(glyphStream.end () - vertices);
}
// ISubWidget should not necessarily be a drawitem
// in this case, it is not...
void doRender() { }
void _updateView ()
{
_checkMargin();
if (mNode != NULL)
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
mNode->outOfDate (i->second->mRenderItem);
}
void _correctView()
{
_checkMargin ();
if (mNode != NULL)
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
mNode->outOfDate (i->second->mRenderItem);
}
void destroyDrawItem()
{
for (ActiveTextFormats::iterator i = mActiveTextFormats.begin (); i != mActiveTextFormats.end (); ++i)
i->second->destroyDrawItem (mNode);
mNode = NULL;
}
};
class BookPageImpl : public BookPage
{
MYGUI_RTTI_DERIVED(BookPage)
public:
BookPageImpl()
: mPageDisplay(NULL)
{
}
void showPage (TypesetBook::Ptr book, size_t page)
{
mPageDisplay->showPage (book, page);
}
void adviseLinkClicked (std::function <void (InteractiveId)> linkClicked)
{
mPageDisplay->mLinkClicked = linkClicked;
}
void unadviseLinkClicked ()
{
mPageDisplay->mLinkClicked = std::function <void (InteractiveId)> ();
}
protected:
virtual void initialiseOverride()
{
Base::initialiseOverride();
if (getSubWidgetText())
{
mPageDisplay = getSubWidgetText()->castType<PageDisplay>();
}
else
{
throw std::runtime_error("BookPage unable to find page display sub widget");
}
}
void onMouseLostFocus(Widget* _new)
{
// NOTE: MyGUI also fires eventMouseLostFocus for widgets that are about to be destroyed (if they had focus).
// Child widgets may already be destroyed! So be careful.
mPageDisplay->onMouseLostFocus ();
}
void onMouseMove(int left, int top)
{
mPageDisplay->onMouseMove (left, top);
}
void onMouseButtonPressed (int left, int top, MyGUI::MouseButton id)
{
mPageDisplay->onMouseButtonPressed (left, top, id);
}
void onMouseButtonReleased(int left, int top, MyGUI::MouseButton id)
{
mPageDisplay->onMouseButtonReleased (left, top, id);
}
PageDisplay* mPageDisplay;
};
void BookPage::registerMyGUIComponents ()
{
MyGUI::FactoryManager & factory = MyGUI::FactoryManager::getInstance();
factory.registerFactory<BookPageImpl>("Widget");
factory.registerFactory<PageDisplay>("BasisSkin");
}
static bool ucsLineBreak (int codePoint)
{
return codePoint == '\n';
}
static bool ucsCarriageReturn (int codePoint)
{
return codePoint == '\r';
}
static bool ucsSpace (int codePoint)
{
switch (codePoint)
{
case 0x0020: // SPACE
case 0x00A0: // NO-BREAK SPACE
case 0x1680: // OGHAM SPACE MARK
case 0x180E: // MONGOLIAN VOWEL SEPARATOR
case 0x2000: // EN QUAD
case 0x2001: // EM QUAD
case 0x2002: // EN SPACE
case 0x2003: // EM SPACE
case 0x2004: // THREE-PER-EM SPACE
case 0x2005: // FOUR-PER-EM SPACE
case 0x2006: // SIX-PER-EM SPACE
case 0x2007: // FIGURE SPACE
case 0x2008: // PUNCTUATION SPACE
case 0x2009: // THIN SPACE
case 0x200A: // HAIR SPACE
case 0x200B: // ZERO WIDTH SPACE
case 0x202F: // NARROW NO-BREAK SPACE
case 0x205F: // MEDIUM MATHEMATICAL SPACE
case 0x3000: // IDEOGRAPHIC SPACE
case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
return true;
default:
return false;
}
}
static bool ucsBreakingSpace (int codePoint)
{
switch (codePoint)
{
case 0x0020: // SPACE
//case 0x00A0: // NO-BREAK SPACE
case 0x1680: // OGHAM SPACE MARK
case 0x180E: // MONGOLIAN VOWEL SEPARATOR
case 0x2000: // EN QUAD
case 0x2001: // EM QUAD
case 0x2002: // EN SPACE
case 0x2003: // EM SPACE
case 0x2004: // THREE-PER-EM SPACE
case 0x2005: // FOUR-PER-EM SPACE
case 0x2006: // SIX-PER-EM SPACE
case 0x2007: // FIGURE SPACE
case 0x2008: // PUNCTUATION SPACE
case 0x2009: // THIN SPACE
case 0x200A: // HAIR SPACE
case 0x200B: // ZERO WIDTH SPACE
case 0x202F: // NARROW NO-BREAK SPACE
case 0x205F: // MEDIUM MATHEMATICAL SPACE
case 0x3000: // IDEOGRAPHIC SPACE
//case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
return true;
default:
return false;
}
}
}