initial commit of netsurf framebuffer library

svn path=/trunk/libnsfb/; revision=7060

1 files changed, 72 insertions, 0 deletions

diff --git a/include/libnsfb_plot.h b/include/libnsfb_plot.h
new file mode 100644
index 0000000..64aa729
--- /dev/null
+++ b/include/libnsfb_plot.h
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+/** Sets a clip rectangle for subsequent plots.
+ *
+ * Sets a clipping area which constrains all subsequent plotting operations.
+ * The clipping area must lie within the framebuffer visible screen or false
+ * will be returned and the new clipping area not set.
+ */
+bool nsfb_plot_set_clip(nsfb_t *nsfb, nsfb_bbox_t *clip);
+
+/** Clears plotting area to a flat colour.
+ */
+bool nsfb_plot_clg(nsfb_t *nsfb, nsfb_colour_t c);
+
+/** Plots a rectangle outline. 
+ *
+ * The line can be solid, dotted or dashed. Top left corner at (x0,y0) and
+ * rectangle has given width and height.
+ */
+bool nsfb_plot_rectangle(nsfb_t *nsfb, nsfb_bbox_t *rect, int line_width, nsfb_colour_t c, bool dotted, bool dashed);
+
+/** Plots a filled rectangle. Top left corner at (x0,y0), bottom
+ *		  right corner at (x1,y1). Note: (x0,y0) is inside filled area,
+ *		  but (x1,y1) is below and to the right. See diagram below.
+ */
+bool nsfb_plot_rectangle_fill(nsfb_t *nsfb, nsfb_bbox_t *rect, nsfb_colour_t c);
+
+/** Plots a line.
+ *
+ * Draw a line from (x0,y0) to (x1,y1). Coordinates are at centre of line
+ * width/thickness.
+ */
+bool nsfb_plot_line(nsfb_t *nsfb, nsfb_bbox_t *line, int line_width, nsfb_colour_t c, bool dotted, bool dashed);
+
+/** Plots a filled polygon. 
+ *
+ * Plots a filled polygon with straight lines between points. The lines around
+ * the edge of the ploygon are not plotted. The polygon is filled with a
+ * non-zero winding rule.
+ *
+ *
+ */
+bool nsfb_plot_polygon(nsfb_t *nsfb, const int *p, unsigned int n, nsfb_colour_t fill);
+
+/** Plot an ellipse.
+ */
+bool nsfb_plot_ellipse(nsfb_t *nsfb, nsfb_bbox_t *ellipse, nsfb_colour_t c);
+
+/** Plot a filled ellipse.
+ */
+bool nsfb_plot_ellipse_fill(nsfb_t *nsfb, nsfb_bbox_t *ellipse, nsfb_colour_t c);
+
+/** Plots an arc.
+ *
+ * around (x,y), from anticlockwise from angle1 to angle2. Angles are measured
+ * anticlockwise from horizontal, in degrees.
+ */
+bool nsfb_plot_arc(nsfb_t *nsfb, int x, int y, int radius, int angle1, int angle2, nsfb_colour_t c);
+
+/** Plots an alpha blended pixel.
+ *
+ * plots an alpha blended pixel.
+ */
+bool nsfb_plot_point(nsfb_t *nsfb, int x, int y, nsfb_colour_t c);
+
+/** copy an area of screen 
+ *
+ * Copy an area of the display.
+ */
+bool nsfb_plot_copy(nsfb_t *nsfb, int srcx, int srcy, int width, int height, int dstx, int dsty);
+
+/** Plot bitmap.
+ */
+bool nsfb_plot_bitmap(nsfb_t *nsfb, nsfb_bbox_t *loc,  nsfb_colour_t *pixel, int bmp_width, int bmp_height, int bmp_stride, bool alpha);