?? draw-lite.c
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/* ** $Id: draw-lite.c,v 1.15 2003/11/23 03:39:20 weiym Exp $**** draw-lite.c: General drawing of GDI for MiniGUI-Lite.**** Copyright (C) 2003 Feynman Software.** Copyright (C) 2000 ~ 2002 Wei Yongming.**** Current maintainer: Wei Yongming.** Create date: 2000/06/12, derived from original gdi.c*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA*//*** TODO:*/ #include <stdio.h>#include <stdlib.h>#include <string.h>#include "common.h"#include "minigui.h"#include "gdi.h"#include "window.h"#include "cliprect.h"#include "gal.h"#include "internals.h"#include "ctrlclass.h"#include "dc.h"#include "cursor.h"extern BOOL dc_GenerateECRgn (PDC pdc, BOOL fForce);/*********************** Generl drawing support ******************************/void GUIAPI SetPixel(HDC hdc, int x, int y, gal_pixel c){ PDC pdc; PCLIPRECT pClipRect; RECT rcOutput; pdc = dc_HDC2PDC (hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } coor_LP2SP (pdc, &x, &y); rcOutput.left = x - 1; rcOutput.top = y - 1; rcOutput.right = x + 1; rcOutput.bottom = y + 1; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if (!dc_IsMemHDC(hdc)) ShowCursorForGDI (FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); GAL_SetFgColor (pdc->gc, c); pClipRect = pdc->ecrgn.head; while(pClipRect) { if(PtInRect(&(pClipRect->rc), x, y)) { GAL_DrawPixel (pdc->gc, x, y, c); break; } pClipRect = pClipRect->next; } if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput);}void GUIAPI SetPixelRGB(HDC hdc, int x, int y, int r, int g, int b){ PDC pdc; PCLIPRECT pClipRect; RECT rcOutput; gal_pixel pixel; GAL_Color color; pdc = dc_HDC2PDC (hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } coor_LP2SP (pdc, &x, &y); rcOutput.left = x - 1; rcOutput.top = y - 1; rcOutput.right = x + 1; rcOutput.bottom = y + 1; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); color.r = r; color.g = g, color.b = b; pixel = GAL_MapColor (pdc->gc, &color); GAL_SetFgColor (pdc->gc, pixel); pClipRect = pdc->ecrgn.head; while (pClipRect) { if(PtInRect(&(pClipRect->rc), x, y)) { GAL_DrawPixel (pdc->gc, x, y, pixel); break; } pClipRect = pClipRect->next; } if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput);}gal_pixel GUIAPI GetPixel(HDC hdc, int x, int y){ PDC pdc; PCLIPRECT pClipRect; int color = 0; RECT rcOutput; pdc = dc_HDC2PDC(hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return PIXEL_invalid; } } coor_LP2SP (pdc, &x, &y); rcOutput.left = x - 1; rcOutput.top = y - 1; rcOutput.right = x + 1; rcOutput.bottom = y + 1; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if (!dc_IsMemHDC (hdc)) ShowCursorForGDI (FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); pClipRect = pdc->ecrgn.head; while(pClipRect) { if(PtInRect(&(pClipRect->rc), x, y)) { GAL_GetPixel (pdc->gc, x, y, &color); break; } pClipRect = pClipRect->next; } if (!dc_IsMemHDC (hdc)) ShowCursorForGDI (TRUE, &rcOutput); return color;}void GUIAPI GetPixelRGB(HDC hdc, int x, int y, int* r, int* g, int* b){ PDC pdc; PCLIPRECT pClipRect; gal_pixel pixel; GAL_Color color; RECT rcOutput; pdc = dc_HDC2PDC(hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } coor_LP2SP(pdc, &x, &y); rcOutput.left = x - 1; rcOutput.top = y - 1; rcOutput.right = x + 1; rcOutput.bottom = y + 1; *r = 0; *g = 0; *b = 0; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if (!dc_IsMemHDC (hdc)) ShowCursorForGDI (FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); pClipRect = pdc->ecrgn.head; while(pClipRect) { if (PtInRect (&(pClipRect->rc), x, y) ) { GAL_GetPixel (pdc->gc, x, y, &pixel); GAL_UnmapPixel (pdc->gc, pixel, &color); *r = color.r; *g = color.g; *b = color.b; break; } pClipRect = pClipRect->next; } if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput);}gal_pixel GUIAPI RGB2Pixel (HDC hdc, int r, int g, int b){ PDC pdc; gal_pixel pixel; GAL_Color color = {r, g, b}; pdc = dc_HDC2PDC (hdc); GAL_SetGC (pdc->gc); pixel = GAL_MapColor (pdc->gc, &color); return pixel;}void GUIAPI MoveTo (HDC hdc, int x, int y){ PDC pdc; pdc = dc_HDC2PDC(hdc); pdc->CurPenPos.x = x; pdc->CurPenPos.y = y;}void GUIAPI LineTo (HDC hdc, int x, int y){ PCLIPRECT pClipRect; PDC pdc; RECT rcOutput; int startx, starty; pdc = dc_HDC2PDC(hdc); startx = pdc->CurPenPos.x; starty = pdc->CurPenPos.y; // Move the current pen pos. pdc->CurPenPos.x = x; pdc->CurPenPos.y = y; if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } // Transfer logical to device to screen here. coor_LP2SP(pdc, &x, &y); coor_LP2SP(pdc, &startx, &starty); rcOutput.left = startx; rcOutput.top = starty; rcOutput.right = x; rcOutput.bottom = y; NormalizeRect (&rcOutput); InflateRect (&rcOutput, 1, 1); IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); GAL_SetFgColor (pdc->gc, pdc->pencolor); pClipRect = pdc->ecrgn.head; while(pClipRect) { if (DoesIntersect (&rcOutput, &pClipRect->rc)) { GAL_SetClipping (pdc->gc, pClipRect->rc.left, pClipRect->rc.top, pClipRect->rc.right - 1, pClipRect->rc.bottom - 1); if(starty == y) { if (startx > x) GAL_DrawHLine (pdc->gc, x, y, startx - x, pdc->pencolor); else GAL_DrawHLine (pdc->gc, startx, y, x - startx, pdc->pencolor); } else GAL_Line (pdc->gc, startx, starty, x, y, pdc->pencolor); } pClipRect = pClipRect->next; } if (!dc_IsMemHDC (hdc)) ShowCursorForGDI (TRUE, &rcOutput);}void GUIAPI PolylineTo (HDC hdc, const POINT* point, int poinum){ int i; MoveTo (hdc, point[0].x, point[0].y); for (i=1; i<poinum; i++) LineTo (hdc, point[i].x, point[i].y);}/************************ Circle and Rectangle *******************************/void GUIAPI Circle(HDC hdc, int x, int y, int r){ PCLIPRECT pClipRect; PDC pdc; RECT rcOutput; pdc = dc_HDC2PDC(hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } // Transfer logical to device to screen here. coor_LP2SP(pdc, &x, &y); rcOutput.left = x - r; rcOutput.top = y - r; rcOutput.right = x + r + 1; rcOutput.bottom = y + r + 1; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); GAL_SetFgColor (pdc->gc, pdc->pencolor); pClipRect = pdc->ecrgn.head; while(pClipRect) { if (DoesIntersect (&rcOutput, &pClipRect->rc)) { GAL_SetClipping (pdc->gc, pClipRect->rc.left, pClipRect->rc.top, pClipRect->rc.right -1 , pClipRect->rc.bottom - 1); GAL_Circle (pdc->gc, x, y, r, pdc->pencolor); } pClipRect = pClipRect->next; } if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput);}void GUIAPI Rectangle (HDC hdc, int x0, int y0, int x1, int y1){ PCLIPRECT pClipRect; PDC pdc; RECT rcOutput; pdc = dc_HDC2PDC(hdc); if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } // Transfer logical to device to screen here. coor_LP2SP(pdc, &x0, &y0); coor_LP2SP(pdc, &x1, &y1); rcOutput.left = x0; rcOutput.top = y0; rcOutput.right = x1; rcOutput.bottom = y1; NormalizeRect (&rcOutput); rcOutput.right ++; rcOutput.bottom ++; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput); // set graphics context. GAL_SetGC (pdc->gc); GAL_SetFgColor (pdc->gc, pdc->pencolor); pClipRect = pdc->ecrgn.head; while(pClipRect) { if (DoesIntersect (&rcOutput, &pClipRect->rc)) { GAL_SetClipping (pdc->gc, pClipRect->rc.left, pClipRect->rc.top, pClipRect->rc.right - 1, pClipRect->rc.bottom - 1); GAL_Rectangle (pdc->gc, x0, y0, x1, y1, pdc->pencolor); } pClipRect = pClipRect->next; } if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput);}void GUIAPI FocusRect(HDC hdc, int x0, int y0, int x1, int y1){ PCLIPRECT pClipRect; PDC pdc; int l, t, r, b, w, h; RECT rcOutput; size_t sizeh, sizev; BYTE* vbuff; BYTE* hline1 = NULL, * hline2 = NULL; BYTE* vline1 = NULL, * vline2 = NULL; int bpp; BYTE xor_byte; pdc = dc_HDC2PDC(hdc); bpp = GAL_BytesPerPixel (pdc->gc); if (GAL_BitsPerPixel (pdc->gc) < 8) xor_byte = 0x0F; else xor_byte = 0xFF; if (dc_IsGeneralHDC(hdc)) { if (!dc_GenerateECRgn (pdc, FALSE)) { return; } } // Transfer logical to device to screen here. coor_LP2SP(pdc, &x0, &y0); coor_LP2SP(pdc, &x1, &y1); l = MIN (x0, x1); t = MIN (y0, y1); r = MAX (x0, x1); b = MAX (y0, y1); rcOutput.left = l; rcOutput.top = t; rcOutput.right = r + 1; rcOutput.bottom = b + 1; IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound); if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput); GAL_SetGC (pdc->gc); w = r - l + 1; h = b - t - 1; if (w == 0 || h == 0) goto my_exit; sizeh = w * bpp; sizev = h * bpp;#ifdef HAVE_ALLOCA if (!(vbuff = alloca ((sizeh << 1) + (sizev << 1))))#else if (!(vbuff = malloc ((sizeh << 1) + (sizev << 1))))#endif goto my_exit; if (w > 0) { int i, j; int offset; hline1 = vbuff; hline2 = vbuff + sizeh; GAL_GetBox (pdc->gc, l, t, w, 1, hline1); GAL_GetBox (pdc->gc, l, b, w, 1, hline2); offset = 0; for (i = 0; i < w; i += 2) { for (j = 0; j < bpp; j++) { hline1[offset + j] ^= xor_byte; hline2[offset + j] ^= xor_byte; } offset += bpp << 1; } } if (h > 0) { int i, j, offset; vline1 = vbuff + (sizeh << 1); vline2 = vbuff + (sizeh << 1) + sizev; GAL_GetBox (pdc->gc, l, t + 1, 1, h, vline1); GAL_GetBox (pdc->gc, r, t + 1, 1, h, vline2); offset = 0; for (i = 0; i < h; i += 2) { for (j = 0; j < bpp; j++) { vline1[offset + j] ^= xor_byte; vline2[offset + j] ^= xor_byte; } offset += bpp << 1; } } // set graphics context. GAL_SetGC (pdc->gc); pClipRect = pdc->ecrgn.head; while(pClipRect) { if (DoesIntersect (&rcOutput, &pClipRect->rc)) { GAL_SetClipping(pdc->gc, pClipRect->rc.left, pClipRect->rc.top, pClipRect->rc.right - 1, pClipRect->rc.bottom - 1); if (hline1) { GAL_PutBox (pdc->gc, l, t, w, 1, hline1); GAL_PutBox (pdc->gc, l, b, w, 1, hline2); } if (vline1) { GAL_PutBox (pdc->gc, l, t + 1, 1, h, vline1); GAL_PutBox (pdc->gc, r, t + 1, 1, h, vline2); } } pClipRect = pClipRect->next; } my_exit: if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(TRUE, &rcOutput); free (vbuff);}?? 快捷鍵說明
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