Vector2 Text::GetCharSize(unsigned index)
{
if (charLocationsDirty_)
UpdateCharLocations();
if (charLocations_.size() < 2)
return Vector2::ZERO;
// For convenience, return the size of the last char if index exceeded (last size entry is zero)
if (index > charLocations_.size() - 2)
index = charLocations_.size() - 2;
return charLocations_[index].size_;
}
Vector2 Text::GetCharPosition(unsigned index)
{
if (charLocationsDirty_)
UpdateCharLocations();
if (charLocations_.empty())
return Vector2::ZERO;
// For convenience, return the position of the text ending if index exceeded
if (index > charLocations_.size() - 1)
index = charLocations_.size() - 1;
return charLocations_[index].position_;
}
void Text::GetBatches(ea::vector<UIBatch>& batches, ea::vector<float>& vertexData, const IntRect& currentScissor)
{
FontFace* face = font_ ? font_->GetFace(fontSize_) : nullptr;
if (!face)
{
hovering_ = false;
return;
}
// If face has changed or char locations are not valid anymore, update before rendering
if (charLocationsDirty_ || !fontFace_ || face != fontFace_)
UpdateCharLocations();
// If face uses mutable glyphs mechanism, reacquire glyphs before rendering to make sure they are in the texture
else if (face->HasMutableGlyphs())
{
for (unsigned i = 0; i < printText_.size(); ++i)
face->GetGlyph(printText_[i]);
}
// Hovering and/or whole selection batch
UISelectable::GetBatches(batches, vertexData, currentScissor);
// Partial selection batch
if (!selected_ && selectionLength_ && charLocations_.size() >= selectionStart_ + selectionLength_ && selectionColor_.a_ > 0.0f)
{
UIBatch batch(this, BLEND_ALPHA, currentScissor, nullptr, &vertexData);
batch.SetColor(selectionColor_);
Vector2 currentStart = charLocations_[selectionStart_].position_;
Vector2 currentEnd = currentStart;
for (unsigned i = selectionStart_; i < selectionStart_ + selectionLength_; ++i)
{
// Check if row changes, and start a new quad in that case
if (charLocations_[i].size_ != Vector2::ZERO)
{
if (charLocations_[i].position_.y_ != currentStart.y_)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_,
currentEnd.y_ - currentStart.y_, 0, 0);
currentStart = charLocations_[i].position_;
currentEnd = currentStart + charLocations_[i].size_;
}
else
{
currentEnd.x_ += charLocations_[i].size_.x_;
currentEnd.y_ = Max(currentStart.y_ + charLocations_[i].size_.y_, currentEnd.y_);
}
}
}
if (currentEnd != currentStart)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_, 0, 0);
}
UIBatch::AddOrMerge(batch, batches);
}
// Text batch
TextEffect textEffect = font_->IsSDFFont() ? TE_NONE : textEffect_;
const ea::vector<ea::shared_ptr<Texture2D> >& textures = face->GetTextures();
for (unsigned n = 0; n < textures.size() && n < pageGlyphLocations_.size(); ++n)
{
// One batch per texture/page
UIBatch pageBatch(this, BLEND_ALPHA, currentScissor, textures[n], &vertexData);
const ea::vector<GlyphLocation>& pageGlyphLocation = pageGlyphLocations_[n];
switch (textEffect)
{
case TE_NONE:
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
case TE_SHADOW:
ConstructBatch(pageBatch, pageGlyphLocation, shadowOffset_.x_, shadowOffset_.y_, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
case TE_STROKE:
if (roundStroke_)
{
// Samples should be even or glyph may be redrawn in wrong x y pos making stroke corners rough
// Adding to thickness helps with thickness of 1 not having enought samples for this formula
// or certain fonts with reflex corners requiring more glyph samples for a smooth stroke when large
int thickness = Min(strokeThickness_, fontSize_);
int samples = thickness * thickness + (thickness % 2 == 0 ? 4 : 3);
float angle = 360.f / samples;
auto floatThickness = (float)thickness;
for (int i = 0; i < samples; ++i)
{
float x = Cos(angle * i) * floatThickness;
float y = Sin(angle * i) * floatThickness;
ConstructBatch(pageBatch, pageGlyphLocation, x, y, &effectColor_, effectDepthBias_);
}
}
else
{
int thickness = Min(strokeThickness_, fontSize_);
int x, y;
for (x = -thickness; x <= thickness; ++x)
{
for (y = -thickness; y <= thickness; ++y)
{
// Don't draw glyphs that aren't on the edges
if (x > -thickness && x < thickness &&
y > -thickness && y < thickness)
continue;
ConstructBatch(pageBatch, pageGlyphLocation, x, y, &effectColor_, effectDepthBias_);
}
}
}
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
}
UIBatch::AddOrMerge(pageBatch, batches);
}
}
void Text::GetBatches(PODVector<UIBatch>& batches, PODVector<float>& vertexData, const IntRect& currentScissor)
{
FontFace* face = font_ ? font_->GetFace(fontSize_) : (FontFace*)0;
if (!face)
{
hovering_ = false;
return;
}
// If face has changed or char locations are not valid anymore, update before rendering
if (charLocationsDirty_ || !fontFace_ || face != fontFace_)
UpdateCharLocations();
// If face uses mutable glyphs mechanism, reacquire glyphs before rendering to make sure they are in the texture
else if (face->HasMutableGlyphs())
{
for (unsigned i = 0; i < printText_.Size(); ++i)
face->GetGlyph(printText_[i]);
}
// 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.SetColor(both ? selectionColor_.Lerp(hoverColor_, 0.5f) :
(selected_ && selectionColor_.a_ > 0.0f ? selectionColor_ : hoverColor_));
batch.AddQuad(0, 0, GetWidth(), GetHeight(), 0, 0);
UIBatch::AddOrMerge(batch, batches);
}
// Partial selection batch
if (!selected_ && selectionLength_ && charLocations_.Size() >= selectionStart_ + selectionLength_ && selectionColor_.a_ > 0.0f)
{
UIBatch batch(this, BLEND_ALPHA, currentScissor, 0, &vertexData);
batch.SetColor(selectionColor_);
IntVector2 currentStart = charLocations_[selectionStart_].position_;
IntVector2 currentEnd = currentStart;
for (unsigned i = selectionStart_; i < selectionStart_ + selectionLength_; ++i)
{
// Check if row changes, and start a new quad in that case
if (charLocations_[i].size_ != IntVector2::ZERO)
{
if (charLocations_[i].position_.y_ != currentStart.y_)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_,
currentEnd.y_ - currentStart.y_, 0, 0);
currentStart = charLocations_[i].position_;
currentEnd = currentStart + charLocations_[i].size_;
}
else
{
currentEnd.x_ += charLocations_[i].size_.x_;
currentEnd.y_ = Max(currentStart.y_ + charLocations_[i].size_.y_, currentEnd.y_);
}
}
}
if (currentEnd != currentStart)
{
batch.AddQuad(currentStart.x_, currentStart.y_, currentEnd.x_ - currentStart.x_, currentEnd.y_ - currentStart.y_, 0, 0);
}
UIBatch::AddOrMerge(batch, batches);
}
// Text batch
TextEffect textEffect = font_->IsSDFFont() ? TE_NONE : textEffect_;
const Vector<SharedPtr<Texture2D> >& textures = face->GetTextures();
for (unsigned n = 0; n < textures.Size() && n < pageGlyphLocations_.Size(); ++n)
{
// One batch per texture/page
UIBatch pageBatch(this, BLEND_ALPHA, currentScissor, textures[n], &vertexData);
const PODVector<GlyphLocation>& pageGlyphLocation = pageGlyphLocations_[n];
switch (textEffect)
{
case TE_NONE:
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
case TE_SHADOW:
ConstructBatch(pageBatch, pageGlyphLocation, 1, 1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
case TE_STROKE:
ConstructBatch(pageBatch, pageGlyphLocation, -1, -1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 0, -1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 1, -1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, -1, 0, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 1, 0, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, -1, 1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 0, 1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 1, 1, &effectColor_, effectDepthBias_);
ConstructBatch(pageBatch, pageGlyphLocation, 0, 0);
break;
}
UIBatch::AddOrMerge(pageBatch, batches);
}
// Reset hovering for next frame
hovering_ = false;
}