Expand description
Drawing primitives
Structs
i32 CoordinatesDefines a pair of
x, y coordinatesDefines the line styles supported by fltk
Opaque type around
Fl_OffscreenOpaque type around
Fl_RegionFunctions
Starts drawing a complex filled polygon
Starts drawing a list of lines
Starts drawing a closed sequence of lines
Starts drawing a list of points. Points are added to the list with
fl_vertex()Starts drawing a convex filled polygon
Checks whether platform supports true alpha blending for RGBA images
Captures part of the window and returns raw data.
Example usage:
Returns the typographical width of a single character
Gets the clip region
Returns the recommended distance above the bottom of a height() tall box to
draw the text at so it looks centered vertically in that box
Draws an arc
Draws an arc
Draws a box given the box type, size, position and color
Draw a check mark
Draws a circle
Adds a series of points on a Bezier curve to the path
Draws a focus rectangle
Draws a series of line segments around the given box.
Draws a series of line segments around the given box
Draw an image into a widget.
Requires a call to
app::set_visual(Mode::Rgb8).unwrap()Draw an image into a widget.
Requires a call to
app::set_visual(Mode::Rgb8).unwrap().
A negative depth flips the image horizontally,
while a negative line data flips it vertically.
Allows passing a line-data parameterDraws a line
Draws a line from (x,y) to (x1,y1) and another from (x1,y1) to (x2,y2)
Draws a non-filled 3-sided polygon
Draws a non-filled 3-sided polygon
Draws a non-filled 4-sided polygon
Draws a filled pie
Draws a point
Draws a point
Fills a 3-sided polygon. The polygon must be convex
Fills a 3-sided polygon. The polygon must be convex
Fills a 4-sided polygon. The polygon must be convex
Draws a rounded box
Draws a rectangle
Draws a filled rectangle
Draws a rectangle with border color
Draws a filled rectangle
Draws a filled rectangle with specified RGB color
Draw a framebuffer (rgba) into a widget
Draw a framebuffer (rgba) into a widget
Draw a framebuffer (rgba) into a widget
Draw a framebuffer (rgba) into a widget
Draws a string starting at the given x, y location
Draws a string starting at the given x, y location with width and height and alignment
Draws a string starting at the given x, y location, rotated to an angle
Draws a horizontal line from (x,y) to (x1,y)
Draws a horizontal line from (x,y) to (x1,y), then vertical from (x1,y) to (x1,y2)
Draws a horizontal line from (x,y) to (x1,y), then a vertical from (x1,y) to (x1,y2)
and then another horizontal from (x1,y2) to (x3,y2)
Draws a vertical line from (x,y) to (x,y1)
Draws a vertical line from (x,y) to (x,y1), then a horizontal from (x,y1) to (x2,y1)
Draws a vertical line from (x,y) to (x,y1) then a horizontal from (x,y1)
to (x2,y1), then another vertical from (x2,y1) to (x2,y3)
Ends complex filled polygon, and draws
Ends list of lines, and draws
Ends closed sequence of lines, and draws
Ends list of points, and draws
Ends closed sequence of lines, and draws
Gets the current font, which is used in various drawing routines
Call gap() to separate loops of the path
Gets the last used color
Finish drawing using OpenGL functions inside a widget’s draw routine
Start drawing using OpenGL functions inside a widget’s draw routine
Returns the recommended minimum line spacing for the current font
Converts text from Windows/X11 latin1 character set to local encoding
Converts text from local encoding to Windowx/X11 latin1 character set
Measure the width and height of a text
Concatenates another transformation onto the current one
Returns whether the rectangle intersect with the current clip region
Erase a selection rectangle without drawing a new one
Draws a selection rectangle, erasing a previous one by XOR’ing it first.
Puts the drawing back
Pops the current transformation matrix from the stack
Limits drawing to a region
Saves the current transformation matrix on the stack
Pushes an empty clip region onto the stack so nothing will be clipped
Resets the spot within the window
Restores the clip region
Concatenates rotation transformation onto the current one
Draws a UTF-8 string right to left starting at the given x, y location
Concatenates scaling transformation onto the current one for both x & y
Concatenates scaling transformation onto the current one
Sets the clip region
Sets the color using rgb values
Sets the cursor style
Sets the cursor style
Sets the drawing color
Sets the drawing color
Sets the drawing color
Sets the current font, which is then used in various drawing routines
Sets the line spacing for the current font
Sets the line style
Sets spot within the window
Sets the status
Get a human-readable string from a shortcut value
Shows a color map
Gets the current font size, which is used in various drawing routines
Measure the coordinates and size of the text where a bounding box using the
returned data would fit the text
Transforms distance using current transformation matrix
Transforms distance using current transformation matrix
Transforms coordinate using the current transformation matrix
Transforms coordinate using the current transformation matrix
Adds coordinate pair to the vertex list without further transformations
Concatenates translation transformation onto the current one
Adds a single vertex to the current path
Returns the typographical width of a string
Returns the typographical width of a sequence of n characters
Measure the width and height of a text