void Text::UpdateCharLocations()
{
// Remember the font face to see if it's still valid when it's time to render
FontFace* face = font_ ? font_->GetFace(fontSize_) : nullptr;
if (!face)
return;
fontFace_ = face;
auto rowHeight = RoundToInt(rowSpacing_ * rowHeight_);
// Store position & size of each character, and locations per texture page
unsigned numChars = unicodeText_.size();
charLocations_.resize(numChars + 1);
pageGlyphLocations_.resize(face->GetTextures().size());
for (unsigned i = 0; i < pageGlyphLocations_.size(); ++i)
pageGlyphLocations_[i].clear();
IntVector2 offset = font_->GetTotalGlyphOffset(fontSize_);
unsigned rowIndex = 0;
unsigned lastFilled = 0;
float x = Round(GetRowStartPosition(rowIndex) + offset.x_);
float y = Round(offset.y_);
for (unsigned i = 0; i < printText_.size(); ++i)
{
CharLocation loc;
loc.position_ = Vector2(x, y);
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph* glyph = face->GetGlyph(c);
loc.size_ = Vector2(glyph ? glyph->advanceX_ : 0, rowHeight_);
if (glyph)
{
// Store glyph's location for rendering. Verify that glyph page is valid
if (glyph->page_ < pageGlyphLocations_.size())
pageGlyphLocations_[glyph->page_].push_back(GlyphLocation(x, y, glyph));
x += glyph->advanceX_;
if (i < printText_.size() - 1)
x += face->GetKerning(c, printText_[i + 1]);
}
}
else
{
loc.size_ = Vector2::ZERO;
x = GetRowStartPosition(++rowIndex);
y += rowHeight;
}
if (lastFilled > printToText_[i])
lastFilled = printToText_[i];
// Fill gaps in case characters were skipped from printing
for (unsigned j = lastFilled; j <= printToText_[i]; ++j)
charLocations_[j] = loc;
lastFilled = printToText_[i] + 1;
}
// Store the ending position
charLocations_[numChars].position_ = Vector2(x, y);
charLocations_[numChars].size_ = Vector2::ZERO;
charLocationsDirty_ = false;
}
void Text::GetBatches(PODVector<UIBatch>& batches, PODVector<float>& vertexData, const IntRect& currentScissor)
{
// Hovering and/or whole selection batch
if ((hovering_ && hoverColor_.a_ > 0.0) || (selected_ && selectionColor_.a_ > 0.0f))
{
bool both = hovering_ && selected_ && hoverColor_.a_ > 0.0 && selectionColor_.a_ > 0.0f;
UIBatch batch(this, BLEND_ALPHA, currentScissor, 0, &vertexData);
batch.AddQuad(0, 0, GetWidth(), GetHeight(), 0, 0, 0, 0, both ? selectionColor_.Lerp(hoverColor_, 0.5f) :
(selected_ && selectionColor_.a_ > 0.0f ? selectionColor_ : hoverColor_));
UIBatch::AddOrMerge(batch, batches);
}
// Partial selection batch
if (!selected_ && selectionLength_ && charSizes_.Size() >= selectionStart_ + selectionLength_ && selectionColor_.a_ > 0.0f)
{
UIBatch batch(this, BLEND_ALPHA, currentScissor, 0, &vertexData);
IntVector2 currentStart = charPositions_[selectionStart_];
IntVector2 currentEnd = currentStart;
for (unsigned i = selectionStart_; i < selectionStart_ + selectionLength_; ++i)
{
// Check if row changes, and start a new quad in that case
if (charSizes_[i].x_ && charSizes_[i].y_)
{
if (charPositions_[i].y_ != currentStart.y_)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_,
0, 0, 0, 0, selectionColor_);
currentStart = charPositions_[i];
currentEnd = currentStart + charSizes_[i];
}
else
{
currentEnd.x_ += charSizes_[i].x_;
currentEnd.y_ = Max(currentStart.y_ + charSizes_[i].y_, currentEnd.y_);
}
}
}
if (currentEnd != currentStart)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_,
0, 0, 0, 0, selectionColor_);
}
UIBatch::AddOrMerge(batch, batches);
}
// Text batch
if (font_)
{
const FontFace* face = font_->GetFace(fontSize_);
if (!face)
return;
if (face->textures_.Size() > 1)
{
// Only traversing thru the printText once regardless of number of textures/pages in the font
Vector<PODVector<GlyphLocation> > pageGlyphLocations(face->textures_.Size());
unsigned rowIndex = 0;
int x = GetRowStartPosition(rowIndex);
int y = 0;
for (unsigned i = 0; i < printText_.Size(); ++i)
{
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph* p = face->GetGlyph(c);
if (!p)
continue;
pageGlyphLocations[p->page_].Push(GlyphLocation(x, y, p));
x += p->advanceX_;
if (i < printText_.Size() - 1)
x += face->GetKerning(c, printText_[i + 1]);
}
else
{
x = GetRowStartPosition(++rowIndex);
y += rowHeight_;
}
}
for (unsigned n = 0; n < face->textures_.Size(); ++n)
{
// One batch per texture/page
UIBatch pageBatch(this, BLEND_ALPHA, currentScissor, face->textures_[n], &vertexData);
const PODVector<GlyphLocation>& pageGlyphLocation = pageGlyphLocations[n];
for (unsigned i = 0; i < pageGlyphLocation.Size(); ++i)
{
const GlyphLocation& glyphLocation = pageGlyphLocation[i];
const FontGlyph& glyph = *glyphLocation.glyph_;
pageBatch.AddQuad(glyphLocation.x_ + glyph.offsetX_, glyphLocation.y_ + glyph.offsetY_, glyph.width_, glyph.height_, glyph.x_, glyph.y_);
}
batches.Push(pageBatch);
}
}
else
{
// If only one texture page, construct the UI batch directly
unsigned rowIndex = 0;
int x = GetRowStartPosition(rowIndex);
int y = 0;
UIBatch batch(this, BLEND_ALPHA, currentScissor, face->textures_[0], &vertexData);
for (unsigned i = 0; i < printText_.Size(); ++i)
{
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph* p = face->GetGlyph(c);
if (!p)
continue;
batch.AddQuad(x + p->offsetX_, y + p->offsetY_, p->width_, p->height_, p->x_, p->y_);
x += p->advanceX_;
if (i < printText_.Size() - 1)
x += face->GetKerning(c, printText_[i + 1]);
}
else
{
x = GetRowStartPosition(++rowIndex);
y += rowHeight_;
}
}
UIBatch::AddOrMerge(batch, batches);
}
}
// Reset hovering for next frame
hovering_ = false;
}
void Text::UpdateText()
{
int width = 0;
int height = 0;
rowWidths_.Clear();
printText_.Clear();
PODVector<unsigned> printToText;
if (font_)
{
const FontFace* face = font_->GetFace(fontSize_);
if (!face)
return;
rowHeight_ = face->rowHeight_;
int rowWidth = 0;
int rowHeight = (int)(rowSpacing_ * rowHeight_);
// First see if the text must be split up
if (!wordWrap_)
{
printText_ = unicodeText_;
printToText.Resize(printText_.Size());
for (unsigned i = 0; i < printText_.Size(); ++i)
printToText[i] = i;
}
else
{
int maxWidth = GetWidth();
unsigned nextBreak = 0;
unsigned lineStart = 0;
for (unsigned i = 0; i < unicodeText_.Size(); ++i)
{
unsigned j;
unsigned c = unicodeText_[i];
if (c != '\n')
{
bool ok = true;
if (nextBreak <= i)
{
int futureRowWidth = rowWidth;
for (j = i; j < unicodeText_.Size(); ++j)
{
unsigned d = unicodeText_[j];
if (d == ' ' || d == '\n')
{
nextBreak = j;
break;
}
const FontGlyph* glyph = face->GetGlyph(d);
if (glyph)
{
futureRowWidth += glyph->advanceX_;
if (j < unicodeText_.Size() - 1)
futureRowWidth += face->GetKerning(d, unicodeText_[j + 1]);
}
if (d == '-' && futureRowWidth <= maxWidth)
{
nextBreak = j + 1;
break;
}
if (futureRowWidth > maxWidth)
{
ok = false;
break;
}
}
}
if (!ok)
{
// If did not find any breaks on the line, copy until j, or at least 1 char, to prevent infinite loop
if (nextBreak == lineStart)
{
while (i < j)
{
printText_.Push(unicodeText_[i]);
printToText.Push(i);
++i;
}
}
printText_.Push('\n');
printToText.Push(Min((int)i, (int)unicodeText_.Size() - 1));
rowWidth = 0;
nextBreak = lineStart = i;
}
if (i < unicodeText_.Size())
{
// When copying a space, position is allowed to be over row width
c = unicodeText_[i];
const FontGlyph* glyph = face->GetGlyph(c);
if (glyph)
{
rowWidth += glyph->advanceX_;
if (i < text_.Length() - 1)
rowWidth += face->GetKerning(c, unicodeText_[i + 1]);
}
if (rowWidth <= maxWidth)
{
printText_.Push(c);
printToText.Push(i);
}
}
}
else
{
printText_.Push('\n');
printToText.Push(Min((int)i, (int)unicodeText_.Size() - 1));
rowWidth = 0;
nextBreak = lineStart = i;
}
}
}
rowWidth = 0;
for (unsigned i = 0; i < printText_.Size(); ++i)
{
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph* glyph = face->GetGlyph(c);
if (glyph)
{
rowWidth += glyph->advanceX_;
if (i < printText_.Size() - 1)
rowWidth += face->GetKerning(c, printText_[i + 1]);
}
}
else
{
width = Max(width, rowWidth);
height += rowHeight;
rowWidths_.Push(rowWidth);
rowWidth = 0;
}
}
if (rowWidth)
{
width = Max(width, rowWidth);
height += rowHeight;
rowWidths_.Push(rowWidth);
}
// Set row height even if text is empty
if (!height)
height = rowHeight;
// Store position & size of each character
charPositions_.Resize(unicodeText_.Size() + 1);
charSizes_.Resize(unicodeText_.Size());
unsigned rowIndex = 0;
int x = GetRowStartPosition(rowIndex);
int y = 0;
for (unsigned i = 0; i < printText_.Size(); ++i)
{
charPositions_[printToText[i]] = IntVector2(x, y);
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph* glyph = face->GetGlyph(c);
charSizes_[printToText[i]] = IntVector2(glyph ? glyph->advanceX_ : 0, rowHeight_);
if (glyph)
{
x += glyph->advanceX_;
if (i < printText_.Size() - 1)
x += face->GetKerning(c, printText_[i + 1]);
}
}
else
{
charSizes_[printToText[i]] = IntVector2::ZERO;
x = GetRowStartPosition(++rowIndex);
y += rowHeight;
}
}
// Store the ending position
charPositions_[unicodeText_.Size()] = IntVector2(x, y);
}
// Set minimum and current size according to the text size, but respect fixed width if set
if (!IsFixedWidth())
{
SetMinWidth(wordWrap_ ? 0 : width);
SetWidth(width);
}
SetFixedHeight(height);
}
void Text::GetBatches(PODVector<UIBatch>& batches, PODVector<UIQuad>& quads, const IntRect& currentScissor)
{
// Hovering or whole selection batch
if ((hovering_ && hoverColor_.a_ > 0.0) || (selected_ && selectionColor_.a_ > 0.0f))
{
UIBatch batch(BLEND_ALPHA, currentScissor, 0, &quads);
batch.AddQuad(*this, 0, 0, GetWidth(), GetHeight(), 0, 0, 0, 0, selected_ && selectionColor_.a_ > 0.0f ? selectionColor_ :
hoverColor_);
UIBatch::AddOrMerge(batch, batches);
}
// Partial selection batch
if (!selected_ && selectionLength_ && charSizes_.Size() >= selectionStart_ + selectionLength_ && selectionColor_.a_ > 0.0f)
{
UIBatch batch(BLEND_ALPHA, currentScissor, 0, &quads);
IntVector2 currentStart = charPositions_[selectionStart_];
IntVector2 currentEnd = currentStart;
for (unsigned i = selectionStart_; i < selectionStart_ + selectionLength_; ++i)
{
// Check if row changes, and start a new quad in that case
if (charSizes_[i].x_ && charSizes_[i].y_)
{
if (charPositions_[i].y_ != currentStart.y_)
{
batch.AddQuad(*this, currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_,
0, 0, 0, 0, selectionColor_);
currentStart = charPositions_[i];
currentEnd = currentStart + charSizes_[i];
}
else
{
currentEnd.x_ += charSizes_[i].x_;
currentEnd.y_ = Max(currentStart.y_ + charSizes_[i].y_, currentEnd.y_);
}
}
}
if (currentEnd != currentStart)
{
batch.AddQuad(*this, currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_,
0, 0, 0, 0, selectionColor_);
}
UIBatch::AddOrMerge(batch, batches);
}
// Text batch
if (font_)
{
const FontFace* face = font_->GetFace(fontSize_);
if (!face)
return;
UIBatch batch(BLEND_ALPHA, currentScissor, face->texture_, &quads);
unsigned rowIndex = 0;
int x = GetRowStartPosition(rowIndex);
int y = 0;
for (unsigned i = 0; i < printText_.Size(); ++i)
{
unsigned c = printText_[i];
if (c != '\n')
{
const FontGlyph& glyph = face->GetGlyph(c);
if (c != ' ')
batch.AddQuad(*this, x + glyph.offsetX_, y + glyph.offsetY_, glyph.width_, glyph.height_, glyph.x_, glyph.y_);
x += glyph.advanceX_;
if (i < printText_.Size() - 1)
x += face->GetKerning(c, printText_[i + 1]);
}
else
{
x = GetRowStartPosition(++rowIndex);
y += rowHeight_;
}
}
UIBatch::AddOrMerge(batch, batches);
}
// Reset hovering for next frame
hovering_ = false;
}
