From 5375bb5b86e266157ceceef08c367da711b8144e Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sat, 1 Jun 2013 01:04:32 +0200 Subject: Cleanup, WIP, needs a NuttX checkout to Firmware/NuttX now --- nuttx/graphics/nxbe/nxbe_clipper.c | 278 ------------------------------------- 1 file changed, 278 deletions(-) delete mode 100644 nuttx/graphics/nxbe/nxbe_clipper.c (limited to 'nuttx/graphics/nxbe/nxbe_clipper.c') 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 - * - * 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 - -#include -#include -#include -#include - -#include -#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) -{ -} - -- cgit v1.2.3