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Diffstat (limited to 'nuttx/graphics/nxbe/nxbe_clipper.c')
-rw-r--r--nuttx/graphics/nxbe/nxbe_clipper.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/nuttx/graphics/nxbe/nxbe_clipper.c b/nuttx/graphics/nxbe/nxbe_clipper.c
deleted file mode 100644
index cdbd421c0..000000000
--- a/nuttx/graphics/nxbe/nxbe_clipper.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/****************************************************************************
- * graphics/nxbe/nxbe_clipper.c
- *
- * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <debug.h>
-
-#include <nuttx/nx/nxglib.h>
-#include "nxbe.h"
-
-/****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
-
-#define NX_INITIAL_STACKSIZE (32)
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/* This structure is a container that retains an associated between a
- * window instance and a rectangle.
- */
-
-struct nxbe_cliprect_s
-{
- FAR struct nxbe_window_s *wnd;
- struct nxgl_rect_s rect;
-};
-
-/* This is the stack of pending clip operations */
-
-struct nxbe_clipstack_s
-{
- uint16_t npushed; /* Number of deferred rectangles in stack */
- uint16_t mxrects; /* The capacity of the stack */
- struct nxbe_cliprect_s *stack; /* The stack of deferred rectangles */
-};
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static const uint8_t g_nxcliporder[4][4] =
-{
- { NX_TOP_NDX, NX_LEFT_NDX, NX_RIGHT_NDX, NX_BOTTOM_NDX }, /* index = NX_CLIPORDER_TLRB */
- { NX_TOP_NDX, NX_RIGHT_NDX, NX_LEFT_NDX, NX_BOTTOM_NDX }, /* NX_CLIPORDER_TRLB */
- { NX_BOTTOM_NDX, NX_LEFT_NDX, NX_RIGHT_NDX, NX_TOP_NDX }, /* NX_CLIPORDER_BLRT */
- { NX_BOTTOM_NDX, NX_RIGHT_NDX, NX_LEFT_NDX, NX_TOP_NDX } /* NX_CLIPORDER_BRLT */
-};
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxbe_pushrectangle
- ****************************************************************************/
-
-static inline void nxbe_pushrectangle(FAR struct nxbe_clipstack_s *stack,
- FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect)
-{
- /* Check if there is room on the stack to hold another rectangle */
-
- if ((stack->npushed + 1) > stack->mxrects)
- {
- /* No then we will need to reallocate the stack to hole more */
-
- int mxrects = stack->mxrects ? 2 * stack->mxrects : NX_INITIAL_STACKSIZE;
- struct nxbe_cliprect_s *newstack;
-
- newstack = realloc(stack->stack, sizeof(struct nxbe_cliprect_s) * mxrects);
- if (!newstack)
- {
- gdbg("Failed to reallocate stack\n");
- return;
- }
-
- stack->stack = newstack;
- stack->mxrects = mxrects;
- }
-
- /* Then push the new rectangle onto the stack */
-
- stack->stack[stack->npushed].wnd = wnd;
- nxgl_rectcopy(&stack->stack[stack->npushed].rect, rect);
- stack->npushed++;
-}
-
-/****************************************************************************
- * Name: nxbe_poprectangle
- ****************************************************************************/
-
-static inline bool nxbe_poprectangle(struct nxbe_clipstack_s *stack,
- FAR struct nxbe_window_s **wnd,
- struct nxgl_rect_s *rect)
-{
- if(stack->npushed > 0)
- {
- stack->npushed--;
- *wnd = stack->stack[stack->npushed].wnd;
- nxgl_rectcopy(rect, &stack->stack[stack->npushed].rect);
- return true;
- }
- return false;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxbe_clipper
- *
- * Descripton:
- * Perform flexible clipping operations. Callbacks are executed for
- * each oscured and visible portions of the window.
- *
- * Input Parameters:
- * wnd - The window to be clipped.
- * rect - The region of concern within the window
- * order - Specifies the order to process the parts of the non-intersecting
- * sub-rectangles.
- * cops - The callbacks to handle obscured and visible parts of the
- * sub-rectangles.
- * plane - The raster operations to be used by the callback functions.
- * These may vary with different color formats.
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
-
-void nxbe_clipper(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *dest, uint8_t order,
- FAR struct nxbe_clipops_s *cops,
- FAR struct nxbe_plane_s *plane)
-{
- struct nxbe_clipstack_s stack;
- FAR struct nxbe_window_s *currw;
- struct nxgl_rect_s rect;
- struct nxgl_rect_s obscuredrect;
- struct nxgl_rect_s currbounds;
- struct nxgl_rect_s nonoverlapped[4];
- int i;
-
- /* Initialize the stack where we will keep deferred rectangle operations */
-
- stack.npushed = 0;
- stack.mxrects = 0;
- stack.stack = NULL;
-
- /* Loop until there are no further pending operations */
-
- nxgl_rectcopy(&rect, dest); /* Start with the whole dest rectangle */
- do
- {
- /* Loop for every window from the current window and above. Only windows
- * above the current window can obscure the current window
- */
-
- for (currw = wnd; currw; currw = currw->above)
- {
- /* Does the current window overlap the dest rectangle? */
-
- currbounds = currw->bounds;
- if (nxgl_rectoverlap(&rect, &currbounds))
- {
- /* Yes.. then it obscures all or part of the dest rectangle.
- * Divide the potentially visible, non-overlapping regions into 4
- * smaller rectangles and push them onto the stack for processing
- * on the next time through the outer loop.
- */
-
- nxgl_nonintersecting(nonoverlapped, &rect, &currbounds);
- for (i = 3; i >= 0; i--)
- {
- /* Push the rectangles in the order specific by the input
- * argument of that name.
- */
-
- struct nxgl_rect_s *candidate = &nonoverlapped[g_nxcliporder[order][i]];
- if (!nxgl_nullrect(candidate))
- {
- nxbe_pushrectangle(&stack, currw->above, candidate);
- }
- }
-
- /* Now performed any required processing on the obscurred,
- * overlapped region.
- */
-
- nxgl_rectintersect(&obscuredrect, &rect, &currbounds);
- cops->obscured(cops, plane, &obscuredrect);
-
- /* Break out of the loop to process the pushed rectangles */
-
- break;
- }
- }
-
- /* If there are no other windows overlapping this rectangle, then this
- * rectangular region must be visible.
- */
-
- if (!currw && !nxgl_nullrect(&rect))
- {
- cops->visible(cops, plane, &rect);
- }
- }
- while (nxbe_poprectangle(&stack, &wnd, &rect));
-
- /* Done! If any stack was allocated, then free it before exit-ting */
-
- if (stack.stack)
- {
- free(stack.stack);
- }
-}
-
-/****************************************************************************
- * Name: nxbe_clipnull
- *
- * Descripton:
- * The do-nothing clipping callback function
- *
- ****************************************************************************/
-
-void nxbe_clipnull(FAR struct nxbe_clipops_s *cops,
- FAR struct nxbe_plane_s *plane,
- FAR const struct nxgl_rect_s *rect)
-{
-}
-
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