class
#include <Magnum/Text/AbstractFont.h>
AbstractLayouter Base for text layouters.
Returned by AbstractFont::
Subclassing
The AbstractFont plugin creates a local AbstractLayouter subclass and implements doRenderGlyph(). You don't need to do most of the redundant sanity checks, these things are checked by the implementation:
- The doRenderGlyph() is called only if
i
is from valid range
Constructors, destructors, conversion operators
- AbstractLayouter(const AbstractLayouter&) deleted
- Copying is not allowed.
- AbstractLayouter(AbstractLayouter&&) deleted
- Moving is not allowed.
- AbstractLayouter(UnsignedInt glyphCount) protected explicit
- Constructor.
Public functions
- auto operator=(const AbstractLayouter&) -> AbstractLayouter& deleted
- Copying is not allowed.
- auto operator=(const AbstractLayouter&&) -> AbstractLayouter& deleted
- Moving is not allowed.
- auto glyphCount() const -> UnsignedInt
- Count of glyphs in the laid out text.
-
auto renderGlyph(UnsignedInt i,
Vector2& cursorPosition,
Range2D& rectangle) -> Containers::
Pair<Range2D, Range2D> - Render a glyph.
Private functions
-
auto doRenderGlyph(UnsignedInt i) -> Containers::
Triple<Range2D, Range2D, Vector2> pure virtual - Implementation for renderGlyph()
Function documentation
Magnum:: Text:: AbstractLayouter:: AbstractLayouter(UnsignedInt glyphCount) explicit protected
Constructor.
Parameters | |
---|---|
glyphCount | Count of glyphs in laid out text |
Containers:: Pair<Range2D, Range2D> Magnum:: Text:: AbstractLayouter:: renderGlyph(UnsignedInt i,
Vector2& cursorPosition,
Range2D& rectangle)
Render a glyph.
Parameters | |
---|---|
i in | Glyph index |
cursorPosition in/out | Cursor position |
rectangle in/out | Bounding rectangle |
The function returns a pair of quad position and texture coordinates, advances cursorPosition
to next character and updates rectangle
with extended bounds. Expects that i
is less than glyphCount().
Containers:: Triple<Range2D, Range2D, Vector2> Magnum:: Text:: AbstractLayouter:: doRenderGlyph(UnsignedInt i) pure virtual private
Implementation for renderGlyph()
Parameters | |
---|---|
i | Glyph index |
Returns quad position (relative to current cursor position), texture coordinates and advance to the next glyph.