Function 

Description 

vm_graphic_blt_frame 

This function allows you to blot frames in the LCD. Please note this function works on MediaTek Serial Interface LCD only. The frames don't have to be the same size as the LCD, and the it will be blot from the corresponding positions of the frames. The color format of the frames should remain the same. 

vm_graphic_draw_ellipse 

Draws an ellipse at the given point within the frame. 

vm_graphic_draw_gradient_rectangle 

Draws a gradient rectangle at the given point within the frame. 

vm_graphic_draw_image_file 

Draws an image file to the frame, this will replace the original frame content. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_draw_image_memory 

Draws an image saved in memory to the frame. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_draw_line 

Draws a line from position(x0, y0) to position(x1, y1) within the frame 

vm_graphic_draw_point 

Draws a point at position(x,y) within the frame 

vm_graphic_draw_polygon 

Draws a polygon at the given point within the frame. 

vm_graphic_draw_rectangle 

Draws a rectangle at the given point within the frame. 

vm_graphic_draw_resized_image_file 

Draws an image file to the frame resizing it to the specified size. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_draw_resized_image_memory 

Draws an image saved in memory to the frame resizing it to the specified size. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_draw_round_rectangle 

Draws a rectangle with rounded corners at the given point within the frame. 

vm_graphic_draw_solid_ellipse 

Draws a solid ellipse at the given point within the frame. 

vm_graphic_draw_solid_polygon 

Draws a solid polygon at the given point within the frame. 

vm_graphic_draw_solid_rectangle 

Draws a solid rectangle at the given point within the frame. 

vm_graphic_draw_solid_round_rectangle 

Draws a solid rectangle with rounded corners at the given point within the frame. 

vm_graphic_draw_text 

Draws the texts at the given position within the frame. The font / color / font_size are following the global settings set by vm_graphic_font_set_font() / vm_graphic_color() / vm_graphic_font_set_font_size(). If they are not set the default system font / block color and medium font will be used. 

vm_graphic_draw_text_by_baseline 

Draws the text to the frame according to the baseline. The font / color / font_size are following the global setting set by vm_graphic_font_set_font() / vm_graphic_color() / vm_graphic_font_set_font_size(). If not set the default system font / block color and medium font will be used. 

vm_graphic_draw_truncated_text 

Draws the texts at the given position within the frame. Will be truncated if necessary with configured truncate symbol. 

vm_graphic_flatten_frame 

Flatten frames to output_frame 

vm_graphic_get_char_baseline_all_language 

Get maximum char baseline in pixel regardless of language for the font size 

vm_graphic_get_char_height_all_language 

Get maximum char height regardless of language for the font size 

vm_graphic_get_char_height_common_language 

get current font height only considering English and Chinese, for dot character, it is precise. for vector font,it is usually higher than single character, it is the text height. 

vm_graphic_get_character_height 

Get the height in pixel of a character 

vm_graphic_get_character_info 

get the information of the appointed character. Unit:pixel 

vm_graphic_get_character_width 

Get the width in pixel of a character 

vm_graphic_get_color 

Get global color 

vm_graphic_get_font_pool_size 

Get the memory size needed for the font pool. The user can allocate memory with desired size, and set it as font pool size by calling vm_graphic_init_font_pool(); 

vm_graphic_get_image_file_frame_number 

Gets the frame number of an image file. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_get_image_file_property 

Gets the property of an image file. 

vm_graphic_get_image_memory_frame_number 

Gets the frame number of an image saved in memory. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_get_image_memory_property 

Gets the property of an image saved in memory. The image format can be ABM / AB2 / JPEG / GIF / PNG / BMP 

vm_graphic_get_point_color 

Gets the color of the appointed point in the frame 

vm_graphic_get_text_baseline 

get the baseline of a text in pixels 

vm_graphic_get_text_height 

get the height of a text in pixels 

vm_graphic_get_text_width 

get the width of a text in pixels 

vm_graphic_get_text_width_height 

 

vm_graphic_init_font_pool 

Initialize the font pool with outside memory. 

vm_graphic_is_vector_font_supported 

Query the current platform if it supports vector fonts. 

vm_graphic_linear_transform 

Linear transformation 

vm_graphic_measure_character 

get the width and height of the appointed character. Unit:pixel 

vm_graphic_reset_clip 

Reset the clip 

vm_graphic_reset_font 

Reset app's own fonts, afterward, the texts will be drawn using system font 

vm_graphic_rotate_frame 

Rotates a frame according to the rotate type, the frame is rotated in-place. 

vm_graphic_set_clip 

Sets the clip, it will affect all the graphic function calls. The coordinates are frame-based. 

vm_graphic_set_color 

Sets the global color for graphic functions such as draw text or shapes 

vm_graphic_set_font 

Set app's own fonts, afterward, engine will try to find the font for a character from these font files one by one, the font with smaller index in the font_file_paths array will have higher priority. If there is no related font in thest font files for a character, the system font will be used. Please call this API after VM_MSG_PAINT event. Set fonts clears the internal cache of the text rendering engine, therefore performance-wise it is better to prevent Reset/Set fonts frequently. 

vm_graphic_set_font_size 

Set the global font size. You can use the VM_GRAPHIC_FONT_SIZE enum. If the platform supports vector font you will be able to set the real font size in pixel, but it should be bigger than 2 for the value that is occupied by VM_GRAPHIC_FONT_SIZE enum. 

vm_graphic_set_font_style 

Set the font style. Only valid for vector fonts.