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Have Font::write return the width of the drawn text

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This avoids having to do separate getTextWidth calls in several places.

More getTextWidth calls could be saved by splitting the rendering of
the font to an off-screen buffer from the final composition onto the
destination surface: the routines that draw text inside a box have to
compute the width before they can draw the box and currently the box
has to be drawn before the text.
This commit is contained in:
Maarten ter Huurne
2014-08-15 03:32:32 +02:00
parent 6895ac0b54
commit ab7a4c1cf7
3 changed files with 35 additions and 24 deletions
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12
src/font.h
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@@ -38,7 +38,11 @@ public:
return lineSpacing;
}
void write(Surface& surface,
/**
* Draws a text on a surface in this font.
* @return The width of the text in pixels.
*/
int write(Surface& surface,
const std::string &text, int x, int y,
HAlign halign = HAlignLeft, VAlign valign = VAlignTop);
@@ -48,7 +52,11 @@ private:
std::string wordWrapSingleLine(const std::string &text,
size_t start, size_t end, int width);
void writeLine(Surface& surface, std::string const& text,
/**
* Draws a single line of text on a surface in this font.
* @return The width of the text in pixels.
*/
int writeLine(Surface& surface, std::string const& text,
int x, int y, HAlign halign, VAlign valign);
TTF_Font *font;