PNMTextMaker

class PNMTextMaker

Bases: FreetypeFont

This object uses the Freetype library to generate text directly into an image. It is different from the TextNode/DynamicTextFont interface, which use the Freetype library to generate text in the scene graph, to be rendered onscreen via the Panda render traversal.

Inheritance diagram

Inheritance diagram of PNMTextMaker

enum Alignment
enumerator A_left = 0
enumerator A_right = 1
enumerator A_center = 2
explicit PNMTextMaker(Filename const &font_filename, int face_index)
explicit PNMTextMaker(char const *font_data, int data_length, int face_index)
explicit PNMTextMaker(FreetypeFont const &copy)
PNMTextMaker(PNMTextMaker const &copy)

The constructor expects the name of some font file that FreeType can read, along with face_index, indicating which font within the file to load (usually 0).

This constructor works as above, but it takes the font data from an in- memory buffer instead of from a named file.

int calc_width(std::string const &text)
int calc_width(std::wstring const &text)

Returns the width in pixels of the indicated line of text.

int generate_into(std::string const &text, PNMImage &dest_image, int x, int y)
int generate_into(std::wstring const &text, PNMImage &dest_image, int x, int y)

Generates a single line of text into the indicated image at the indicated position; the return value is the total width in pixels.

Alignment get_align(void) const
int get_distance_field_radius(void) const

Returns the radius previously set with set_distance_field_radius(), or 0 otherwise.

LColor const &get_fg(void) const

Returns the foreground color of text that will be generated by future calls to generate_into().

PNMTextGlyph *get_glyph(int character)

Returns the glyph for the indicated index, or NULL if it is not defined in the font.

LColor const &get_interior(void) const

Returns the color that will be used to render the interior portions of hollow fonts.

bool get_interior_flag(void) const
bool is_valid(void) const

Returns true if the PNMTextMaker is valid and ready to generate text, false otherwise.

void set_align(PNMTextMaker::Alignment align_type)
void set_distance_field_radius(int radius)

If this is set to something other than 0, Panda will generate a signed distance field with the given radius.

void set_fg(LColor const &fg)

Sets the foreground color of text that will be generated by future calls to generate_into(). This is the color that all of the “on” pixels in the font will show as.

void set_interior(LColor const &interior)

Sets the color that will be used to render the interior portions of hollow fonts in future calls to generate_into(). This is respected only if interior_flag is true.

void set_interior_flag(bool interior_flag)

Sets the flag that indicates whether the interior of hollow fonts is identified as a preprocess as each glyph is loaded. If this flag is true, you may specify an interior color along with a fg and bg color when you place text; if the flag is false, the interior color is ignored.

It is generally best to set_native_antialias(0) when using this feature. Also, this works best when the pixel size is not very small.