diff options
Diffstat (limited to 'src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx')
| -rw-r--r-- | src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx | 322 |
1 files changed, 0 insertions, 322 deletions
diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx b/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx deleted file mode 100644 index 97b3244d1..000000000 --- a/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx +++ /dev/null @@ -1,322 +0,0 @@ -// -// Rectangle drawing routines for the Fast Light Tool Kit (FLTK). -// -// Copyright 1998-2022 by Bill Spitzak and others. -// -// This library is free software. Distribution and use rights are outlined in -// the file "COPYING" which should have been included with this file. If this -// file is missing or damaged, see the license at: -// -// https://www.fltk.org/COPYING.php -// -// Please see the following page on how to report bugs and issues: -// -// https://www.fltk.org/bugs.php -// - - -#include <config.h> -#include "Fl_GDI_Graphics_Driver.H" -#include <FL/Fl.H> -#include <FL/platform.H> -#include <FL/fl_draw.H> -#include "../../Fl_Screen_Driver.H" -#include "Fl_Font.H" - -#if USE_GDIPLUS - -Fl_GDIplus_Graphics_Driver::Fl_GDIplus_Graphics_Driver() : Fl_GDI_Graphics_Driver() { - if (!fl_current_xmap) color(FL_BLACK); - pen_ = new Gdiplus::Pen(gdiplus_color_, 1); - pen_->SetLineJoin(Gdiplus::LineJoinRound); - pen_->SetStartCap(Gdiplus::LineCapFlat); - pen_->SetEndCap(Gdiplus::LineCapFlat); - brush_ = new Gdiplus::SolidBrush(gdiplus_color_); - active = true; -} - -Fl_GDIplus_Graphics_Driver::~Fl_GDIplus_Graphics_Driver() { - delete pen_; - delete brush_; -} - -void Fl_GDIplus_Graphics_Driver::antialias(int state) { - active = state; -} - -int Fl_GDIplus_Graphics_Driver::antialias() { - return active; -} - -void Fl_GDIplus_Graphics_Driver::draw_circle(int x, int y, int d, Fl_Color c) { - Fl_Graphics_Driver::draw_circle(x, y, d, c); -} - -int Fl_GDIplus_Graphics_Driver::gdiplus_state_ = Fl_GDIplus_Graphics_Driver::STATE_CLOSED; -ULONG_PTR Fl_GDIplus_Graphics_Driver::gdiplus_token_ = 0; - -void Fl_GDIplus_Graphics_Driver::shutdown() { - if (gdiplus_state_ == STATE_OPEN) { - gdiplus_state_ = STATE_SHUTDOWN; - Gdiplus::GdiplusShutdown(Fl_GDIplus_Graphics_Driver::gdiplus_token_); - gdiplus_token_ = 0; - gdiplus_state_ = STATE_CLOSED; - } else if (gdiplus_state_ == STATE_CLOSED) { -// Fl::warning("Fl_GDIplus_Graphics_Driver::shutdown() called, but driver is closed."); - } else if (gdiplus_state_ == STATE_SHUTDOWN) { -// Fl::warning("Fl_GDIplus_Graphics_Driver::shutdown() called recursively."); - } else if (gdiplus_state_ == STATE_STARTUP) { -// Fl::warning("Fl_GDIplus_Graphics_Driver::shutdown() called while driver is starting up."); - } -} -#endif - -// Code used to switch output to an off-screen window. See macros in -// win32.H which save the old state in local variables. - -typedef struct { BYTE a; BYTE b; BYTE c; BYTE d; } FL_BLENDFUNCTION; -typedef BOOL (WINAPI* fl_alpha_blend_func) -(HDC,int,int,int,int,HDC,int,int,int,int,FL_BLENDFUNCTION); -static fl_alpha_blend_func fl_alpha_blend = NULL; -static FL_BLENDFUNCTION blendfunc = { 0, 0, 255, 1}; - -/* Reference to the current device context - For back-compatibility only. The preferred procedure to get this reference is - Fl_Surface_Device::surface()->driver()->gc(). - */ -HDC fl_gc = 0; - - -HDC fl_win32_gc() { return fl_gc; } - - -Fl_GDI_Graphics_Driver::Fl_GDI_Graphics_Driver() { - mask_bitmap_ = NULL; - gc_ = NULL; - long_point = NULL; - depth = -1; - origins = NULL; - style_ = FL_SOLID; -} - -Fl_GDI_Graphics_Driver::~Fl_GDI_Graphics_Driver() { - if (long_point) free(long_point); - delete[] origins; -} - -void Fl_GDI_Graphics_Driver::global_gc() -{ - fl_gc = (HDC)gc(); -} - -/* - * This function checks if the version of Windows that we - * curently run on supports alpha blending for bitmap transfers - * and finds the required function if so. - */ -char Fl_GDI_Graphics_Driver::can_do_alpha_blending() { - static char been_here = 0; - static char can_do = 0; - // do this test only once - if (been_here) return can_do; - been_here = 1; - // load the library that implements alpha blending - HMODULE hMod = LoadLibrary("MSIMG32.DLL"); - // give up if that doesn't exist (Win95?) - if (!hMod) return 0; - // now find the blending function inside that dll - fl_alpha_blend = (fl_alpha_blend_func)GetProcAddress(hMod, "AlphaBlend"); - // give up if we can't find it (Win95) - if (!fl_alpha_blend) return 0; - // we have the call, but does our display support alpha blending? - // get the desktop's device context - HDC dc = GetDC(0L); - if (!dc) return 0; - // check the device capabilities flags. However GetDeviceCaps - // does not return anything useful, so we have to do it manually: - - HBITMAP bm = CreateCompatibleBitmap(dc, 1, 1); - HDC new_gc = CreateCompatibleDC(dc); - int save = SaveDC(new_gc); - SelectObject(new_gc, bm); - /*COLORREF set = */ SetPixel(new_gc, 0, 0, 0x01010101); - BOOL alpha_ok = fl_alpha_blend(dc, 0, 0, 1, 1, new_gc, 0, 0, 1, 1, blendfunc); - RestoreDC(new_gc, save); - DeleteDC(new_gc); - DeleteObject(bm); - ReleaseDC(0L, dc); - - if (alpha_ok) can_do = 1; - return can_do; -} - -HDC fl_makeDC(HBITMAP bitmap) { - HDC new_gc = CreateCompatibleDC((HDC)Fl_Graphics_Driver::default_driver().gc()); - SetTextAlign(new_gc, TA_BASELINE|TA_LEFT); - SetBkMode(new_gc, TRANSPARENT); -#if USE_COLORMAP - if (fl_palette) SelectPalette(new_gc, fl_palette, FALSE); -#endif - SelectObject(new_gc, bitmap); - return new_gc; -} - -void Fl_GDI_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Offscreen bitmap, int srcx, int srcy) { - x = int(x * scale()); y = int(y * scale()); w = int(w * scale()); h = int(h * scale()); - srcx = int(srcx * scale()); srcy = int(srcy * scale()); - if (srcx < 0) {w += srcx; x -= srcx; srcx = 0;} - if (srcy < 0) {h += srcy; y -= srcy; srcy = 0;} - int off_width, off_height; - Fl::screen_driver()->offscreen_size(bitmap, off_width, off_height); - if (srcx + w >= off_width) {w = off_width - srcx;} - if (srcy + h >= off_height) {h = off_height - srcy;} - if (w <= 0 || h <= 0) return; - HDC new_gc = CreateCompatibleDC(gc_); - int save = SaveDC(new_gc); - SelectObject(new_gc, (HBITMAP)bitmap); - BitBlt(gc_, x, y, w, h, new_gc, srcx, srcy, SRCCOPY); - RestoreDC(new_gc, save); - DeleteDC(new_gc); -} - -void Fl_GDI_Printer_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Offscreen bitmap, int srcx, int srcy) { - Fl_Graphics_Driver::copy_offscreen(x, y, w, h, bitmap, srcx, srcy); -} - -BOOL Fl_GDI_Graphics_Driver::alpha_blend_(int x, int y, int w, int h, HDC src_gc, int srcx, int srcy, int srcw, int srch) { - return fl_alpha_blend(gc_, x, y, w, h, src_gc, srcx, srcy, srcw, srch, blendfunc); -} - -#if ! defined(FL_DOXYGEN) -void Fl_GDI_Graphics_Driver::copy_offscreen_with_alpha(int x,int y,int w,int h,HBITMAP bitmap,int srcx,int srcy) { - HDC new_gc = CreateCompatibleDC(gc_); - int save = SaveDC(new_gc); - SelectObject(new_gc, bitmap); - BOOL alpha_ok = 0; - // first try to alpha blend - if ( fl_can_do_alpha_blending() ) { - alpha_ok = alpha_blend_(x, y, w, h, new_gc, srcx, srcy, w, h); - } - // if that failed (it shouldn't), still copy the bitmap over, but now alpha is 1 - if (!alpha_ok) { - BitBlt(gc_, x, y, w, h, new_gc, srcx, srcy, SRCCOPY); - } - RestoreDC(new_gc, save); - DeleteDC(new_gc); -} - -void Fl_GDI_Graphics_Driver::translate_all(int x, int y) { - const int stack_height = 10; - if (depth == -1) { - origins = new POINT[stack_height]; - depth = 0; - } - if (depth >= stack_height) { - Fl::warning("Fl_Copy/Image_Surface: translate stack overflow!"); - depth = stack_height - 1; - } - GetWindowOrgEx((HDC)gc(), origins+depth); - SetWindowOrgEx((HDC)gc(), int(origins[depth].x - x*scale()), int(origins[depth].y - y*scale()), NULL); - depth++; -} - -void Fl_GDI_Graphics_Driver::untranslate_all() { - if (depth > 0) depth--; - SetWindowOrgEx((HDC)gc(), origins[depth].x, origins[depth].y, NULL); -} -#endif - -void Fl_GDI_Graphics_Driver::add_rectangle_to_region(Fl_Region r, int X, int Y, int W, int H) { - HRGN R = (HRGN)XRectangleRegion(X, Y, W, H); - CombineRgn((HRGN)r, (HRGN)r, R, RGN_OR); - XDestroyRegion(R); -} - -void Fl_GDI_Graphics_Driver::transformed_vertex0(float x, float y) { - if (!n || x != long_point[n-1].x || y != long_point[n-1].y) { - if (n >= p_size) { - p_size = long_point ? 2*p_size : 16; - long_point = (POINT*)realloc((void*)long_point, p_size*sizeof(*long_point)); - } - long_point[n].x = LONG(x); - long_point[n].y = LONG(y); - n++; - } -} - -void Fl_GDI_Graphics_Driver::fixloop() { // remove equal points from closed path - while (n>2 && long_point[n-1].x == long_point[0].x && long_point[n-1].y == long_point[0].y) n--; -} - -Fl_Region Fl_GDI_Graphics_Driver::XRectangleRegion(int x, int y, int w, int h) { - if (Fl_Surface_Device::surface() == Fl_Display_Device::display_device()) return CreateRectRgn(x,y,x+w,y+h); - // because rotation may apply, the rectangle becomes a polygon in device coords - POINT pt[4] = { {x, y}, {x + w, y}, {x + w, y + h}, {x, y + h} }; - LPtoDP((HDC)fl_graphics_driver->gc(), pt, 4); - return CreatePolygonRgn(pt, 4, ALTERNATE); -} - -void Fl_GDI_Graphics_Driver::XDestroyRegion(Fl_Region r) { - DeleteObject((HRGN)r); -} - - -void Fl_GDI_Graphics_Driver::scale(float f) { - if (f != scale()) { - size_ = 0; - Fl_Graphics_Driver::scale(f); - color(FL_BLACK); - line_style(FL_SOLID); // scale also default line width - } -} - - -/* Rescale region r with factor f and returns the scaled region. - Region r is returned unchanged if r is null or f is 1. - */ -HRGN Fl_GDI_Graphics_Driver::scale_region(HRGN r, float f, Fl_GDI_Graphics_Driver *dr) { - if (r && f != 1) { - DWORD size = GetRegionData(r, 0, NULL); - RGNDATA *pdata = (RGNDATA*)malloc(size); - GetRegionData(r, size, pdata); - POINT pt = {0, 0}; - if (dr && dr->depth >= 1) { // account for translation - GetWindowOrgEx((HDC)dr->gc(), &pt); - pt.x = int(pt.x * (f - 1)); - pt.y = int(pt.y * (f - 1)); - } - RECT *rects = (RECT*)&(pdata->Buffer); - for (DWORD i = 0; i < pdata->rdh.nCount; i++) { - int x = Fl_Scalable_Graphics_Driver::floor(rects[i].left, f) + pt.x; - int y = Fl_Scalable_Graphics_Driver::floor(rects[i].top, f) + pt.y; - RECT R2; - R2.left = x; - R2.top = y; - R2.right = Fl_Scalable_Graphics_Driver::floor(rects[i].right, f) + pt.x - x + R2.left; - R2.bottom = Fl_Scalable_Graphics_Driver::floor(rects[i].bottom, f) + pt.y - y + R2.top; - rects[i] = R2; - } - r = ExtCreateRegion(NULL, size, pdata); - free(pdata); - } - return r; -} - - -Fl_Region Fl_GDI_Graphics_Driver::scale_clip(float f) { - HRGN r = (HRGN)rstack[rstackptr]; - HRGN r2 = scale_region(r, f, this); - return (r == r2 ? NULL : (rstack[rstackptr] = r2, r)); -} - -void Fl_GDI_Graphics_Driver::set_current_() { - restore_clip(); -} - -void Fl_GDI_Graphics_Driver::cache_size(Fl_Image *img, int &width, int &height) -{ - float s = scale(); - width = (s == int(s) ? width * int(s) : floor(width+1)); - height = (s == int(s) ? height * int(s) : floor(height+1)); - cache_size_finalize(img, width, height); -} |
