d1f63b2b06
* src/haiku_draw_support.cc (be_draw_bitmap_with_mask): New function. * src/haiku_support.h: Add prototype. * src/haikuterm.c (haiku_draw_image_glyph_string): Draw stipple correctly. (haiku_draw_glyph_string): Fix conditions under which row->stipple_p is set.
536 lines
12 KiB
C++
536 lines
12 KiB
C++
/* Haiku window system support. Hey, Emacs, this is -*- C++ -*-
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Copyright (C) 2021-2022 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <View.h>
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#include <Region.h>
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#include <Font.h>
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#include <Window.h>
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#include <Bitmap.h>
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#include <cmath>
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#include "haiku_support.h"
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#define RGB_TO_UINT32(r, g, b) ((255 << 24) | ((r) << 16) | ((g) << 8) | (b))
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#define RED_FROM_ULONG(color) (((color) >> 16) & 0xff)
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#define GREEN_FROM_ULONG(color) (((color) >> 8) & 0xff)
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#define BLUE_FROM_ULONG(color) ((color) & 0xff)
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#define RGB_COLOR_UINT32(r) RGB_TO_UINT32 ((r).red, (r).green, (r).blue)
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static void
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rgb32_to_rgb_color (uint32_t rgb, rgb_color *color)
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{
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color->red = RED_FROM_ULONG (rgb);
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color->green = GREEN_FROM_ULONG (rgb);
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color->blue = BLUE_FROM_ULONG (rgb);
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color->alpha = 255;
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}
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static BView *
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get_view (void *vw)
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{
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BView *view = (BView *) find_appropriate_view_for_draw (vw);
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return view;
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}
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void
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BView_StartClip (void *view)
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{
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BView *vw = get_view (view);
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vw->PushState ();
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}
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void
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BView_EndClip (void *view)
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{
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BView *vw = get_view (view);
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vw->PopState ();
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}
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void
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BView_SetHighColor (void *view, uint32_t color)
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{
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BView *vw = get_view (view);
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rgb_color col;
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rgb32_to_rgb_color (color, &col);
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vw->SetHighColor (col);
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}
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void
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BView_SetLowColor (void *view, uint32_t color)
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{
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BView *vw = get_view (view);
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rgb_color col;
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rgb32_to_rgb_color (color, &col);
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vw->SetLowColor (col);
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}
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void
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BView_SetPenSize (void *view, int u)
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{
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BView *vw = get_view (view);
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vw->SetPenSize (u);
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}
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void
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BView_FillRectangle (void *view, int x, int y, int width, int height)
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{
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BView *vw = get_view (view);
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BRect rect = BRect (x, y, x + width - 1, y + height - 1);
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vw->FillRect (rect);
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}
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void
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BView_FillRectangleAbs (void *view, int x, int y, int x1, int y1)
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{
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BView *vw = get_view (view);
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BRect rect = BRect (x, y, x1, y1);
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vw->FillRect (rect);
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}
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void
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BView_StrokeRectangle (void *view, int x, int y, int width, int height)
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{
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BView *vw = get_view (view);
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BRect rect = BRect (x, y, x + width - 1, y + height - 1);
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vw->StrokeRect (rect);
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}
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void
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BView_SetViewColor (void *view, uint32_t color)
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{
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BView *vw = get_view (view);
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rgb_color col;
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rgb32_to_rgb_color (color, &col);
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#ifndef USE_BE_CAIRO
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vw->SetViewColor (col);
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#else
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vw->SetViewColor (B_TRANSPARENT_32_BIT);
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#endif
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}
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void
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BView_ClipToRect (void *view, int x, int y, int width, int height)
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{
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BView *vw = get_view (view);
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BRect rect = BRect (x, y, x + width - 1, y + height - 1);
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vw->ClipToRect (rect);
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}
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void
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BView_ClipToInverseRect (void *view, int x, int y, int width, int height)
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{
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BView *vw = get_view (view);
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BRect rect = BRect (x, y, x + width - 1, y + height - 1);
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vw->ClipToInverseRect (rect);
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}
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void
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BView_StrokeLine (void *view, int sx, int sy, int tx, int ty)
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{
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BView *vw = get_view (view);
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BPoint from = BPoint (sx, sy);
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BPoint to = BPoint (tx, ty);
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vw->StrokeLine (from, to);
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}
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void
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BView_SetFont (void *view, void *font)
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{
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BView *vw = get_view (view);
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vw->SetFont ((BFont *) font);
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}
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void
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BView_MovePenTo (void *view, int x, int y)
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{
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BView *vw = get_view (view);
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BPoint pt = BPoint (x, y);
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vw->MovePenTo (pt);
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}
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void
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BView_DrawString (void *view, const char *chr, ptrdiff_t len)
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{
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BView *vw = get_view (view);
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vw->DrawString (chr, len);
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}
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void
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BView_DrawChar (void *view, char chr)
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{
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BView *vw = get_view (view);
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vw->DrawChar (chr);
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}
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void
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BView_CopyBits (void *view, int x, int y, int width, int height,
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int tox, int toy, int towidth, int toheight)
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{
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BView *vw = get_view (view);
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vw->CopyBits (BRect (x, y, x + width - 1, y + height - 1),
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BRect (tox, toy, tox + towidth - 1, toy + toheight - 1));
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vw->Sync ();
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}
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/* Convert RGB32 color color from RGB color space to its
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HSL components pointed to by H, S and L. */
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void
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rgb_color_hsl (uint32_t rgb, double *h, double *s, double *l)
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{
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rgb_color col;
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rgb32_to_rgb_color (rgb, &col);
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double red = col.red / 255.0;
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double green = col.green / 255.0;
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double blue = col.blue / 255.0;
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double max = std::fmax (std::fmax (red, blue), green);
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double min = std::fmin (std::fmin (red, blue), green);
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double delta = max - min;
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*l = (max + min) / 2.0;
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if (!delta)
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{
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*h = 0;
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*s = 0;
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return;
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}
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*s = (*l < 0.5) ? delta / (max + min) :
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delta / (20 - max - min);
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double rc = (max - red) / delta;
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double gc = (max - green) / delta;
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double bc = (max - blue) / delta;
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if (red == max)
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*h = bc - gc;
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else if (green == max)
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*h = 2.0 + rc + -bc;
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else
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*h = 4.0 + gc + -rc;
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*h = std::fmod (*h / 6, 1.0);
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}
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static double
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hue_to_rgb (double v1, double v2, double h)
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{
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if (h < 1 / 6)
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return v1 + (v2 - v1) * h * 6.0;
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else if (h < 0.5)
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return v2;
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else if (h < 2.0 / 3)
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return v1 + (v2 - v1) * (2.0 / 3 - h) * 6.0;
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return v1;
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}
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void
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hsl_color_rgb (double h, double s, double l, uint32_t *rgb)
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{
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if (!s)
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*rgb = RGB_TO_UINT32 (std::lrint (l * 255),
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std::lrint (l * 255),
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std::lrint (l * 255));
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else
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{
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double m2 = l <= 0.5 ? l * (1 + s) : l + s - l * s;
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double m1 = 2.0 * l - m2;
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*rgb = RGB_TO_UINT32
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(std::lrint (hue_to_rgb (m1, m2,
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std::fmod (h + 1 / 3.0, 1)) * 255),
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std::lrint (hue_to_rgb (m1, m2, h) * 255),
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std::lrint (hue_to_rgb (m1, m2,
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std::fmod (h - 1 / 3.0, 1)) * 255));
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}
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}
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void
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BView_DrawBitmap (void *view, void *bitmap, int x, int y,
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int width, int height, int vx, int vy, int vwidth,
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int vheight, bool use_bilinear_filtering)
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{
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BView *vw = get_view (view);
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BBitmap *bm = (BBitmap *) bitmap;
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vw->SetDrawingMode (B_OP_OVER);
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if (!use_bilinear_filtering)
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vw->DrawBitmap (bm, BRect (x, y, x + width - 1, y + height - 1),
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BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1));
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else
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vw->DrawBitmap (bm, BRect (x, y, x + width - 1, y + height - 1),
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BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1),
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B_FILTER_BITMAP_BILINEAR);
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vw->SetDrawingMode (B_OP_COPY);
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}
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void
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BView_DrawBitmapTiled (void *view, void *bitmap, int x, int y,
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int width, int height, int vx, int vy,
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int vwidth, int vheight)
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{
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BView *vw = get_view (view);
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BBitmap *bm = (BBitmap *) bitmap;
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BRect bounds = bm->Bounds ();
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if (width == -1)
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width = BE_RECT_WIDTH (bounds);
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if (height == -1)
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height = BE_RECT_HEIGHT (bounds);
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vw->SetDrawingMode (B_OP_OVER);
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vw->DrawBitmap (bm, BRect (x, y, x + width - 1, y + height - 1),
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BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1),
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B_TILE_BITMAP);
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vw->SetDrawingMode (B_OP_COPY);
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}
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void
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BView_DrawBitmapWithEraseOp (void *view, void *bitmap, int x,
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int y, int width, int height)
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{
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BView *vw = get_view (view);
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BBitmap *bm = (BBitmap *) bitmap;
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BBitmap bc (bm->Bounds (), B_RGBA32);
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BRect rect (x, y, x + width - 1, y + height - 1);
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uint32_t *bits;
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size_t stride;
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rgb_color low_color;
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BRect bounds;
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if (bc.InitCheck () != B_OK || bc.ImportBits (bm) != B_OK)
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return;
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bits = (uint32_t *) bc.Bits ();
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stride = bc.BytesPerRow ();
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if (bm->ColorSpace () == B_GRAY1)
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{
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low_color = vw->LowColor ();
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bounds = bc.Bounds ();
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for (int y = 0; y < BE_RECT_HEIGHT (bounds); ++y)
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{
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for (int x = 0; x < BE_RECT_WIDTH (bounds); ++x)
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{
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if (bits[y * (stride / 4) + x] == 0xFF000000)
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bits[y * (stride / 4) + x] = RGB_COLOR_UINT32 (low_color);
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else
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bits[y * (stride / 4) + x] = 0;
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}
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}
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}
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vw->SetDrawingMode ((bm->ColorSpace ()
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== B_GRAY1)
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? B_OP_OVER : B_OP_ERASE);
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vw->DrawBitmap (&bc, rect);
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vw->SetDrawingMode (B_OP_COPY);
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}
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void
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be_draw_image_mask (void *src, void *view, int x, int y, int width,
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int height, int vx, int vy, int vwidth, int vheight,
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uint32_t color)
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{
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BBitmap *source = (BBitmap *) src;
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BBitmap bm (source->Bounds (), B_RGBA32);
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BRect bounds = bm.Bounds ();
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int bx, by, bit;
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BView *vw;
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if (bm.InitCheck () != B_OK)
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return;
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/* Fill the background color or transparency into the bitmap,
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depending on the value of the mask. */
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for (by = 0; by < BE_RECT_HEIGHT (bounds); ++by)
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{
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for (bx = 0; bx < BE_RECT_WIDTH (bounds); ++bx)
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{
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bit = haiku_get_pixel ((void *) source, bx, by);
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if (!bit)
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haiku_put_pixel ((void *) &bm, bx, by,
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((uint32_t) 255 << 24) | color);
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else
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haiku_put_pixel ((void *) &bm, bx, by, 0);
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}
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}
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vw = get_view (view);
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vw->SetDrawingMode (B_OP_OVER);
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vw->DrawBitmap (&bm, BRect (x, y, x + width - 1, y + height - 1),
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BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1));
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vw->SetDrawingMode (B_OP_COPY);
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}
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void
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be_apply_affine_transform (void *view, double m0, double m1, double tx,
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double m2, double m3, double ty)
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{
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BAffineTransform transform (m0, m2, m1, m3, tx, ty);
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get_view (view)->SetTransform (transform);
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}
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void
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be_apply_inverse_transform (double (*matrix3x3)[3], int x, int y,
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int *x_out, int *y_out)
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{
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BAffineTransform transform (matrix3x3[0][0], matrix3x3[1][0],
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matrix3x3[0][1], matrix3x3[1][1],
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matrix3x3[0][2], matrix3x3[1][2]);
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BPoint point (x, y);
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transform.ApplyInverse (&point);
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*x_out = std::floor (point.x);
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*y_out = std::floor (point.y);
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}
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void
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BView_FillTriangle (void *view, int x1, int y1,
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int x2, int y2, int x3, int y3)
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{
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BView *vw = get_view (view);
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vw->FillTriangle (BPoint (x1, y1), BPoint (x2, y2),
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BPoint (x3, y3));
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}
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void
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BView_InvertRect (void *view, int x, int y, int width, int height)
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{
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BView *vw = get_view (view);
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vw->InvertRect (BRect (x, y, x + width - 1, y + height - 1));
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}
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static void
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be_draw_cross_on_pixmap_1 (BBitmap *bitmap, int x, int y, int width,
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int height, uint32_t color)
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{
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BBitmap dest (bitmap->Bounds (),
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bitmap->ColorSpace (),
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true, false);
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BView view (bitmap->Bounds (), NULL, B_FOLLOW_NONE, 0);
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rgb_color high_color;
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rgb32_to_rgb_color (color, &high_color);
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dest.ImportBits (bitmap);
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if (!dest.Lock ())
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return;
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dest.AddChild (&view);
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view.SetHighColor (high_color);
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view.StrokeLine (BPoint (x, y),
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BPoint (x + width - 1, y + height - 1));
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view.StrokeLine (BPoint (x, y + height - 1),
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BPoint (x + width - 1, y));
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view.RemoveSelf ();
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bitmap->ImportBits (&dest);
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}
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void
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be_draw_cross_on_pixmap (void *bitmap, int x, int y, int width,
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int height, uint32_t color)
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{
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BBitmap *target = (BBitmap *) bitmap;
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be_draw_cross_on_pixmap_1 (target, x, y, width, height,
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color);
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}
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void
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be_draw_bitmap_with_mask (void *view, void *bitmap, void *mask,
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int dx, int dy, int width, int height,
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int vx, int vy, int vwidth, int vheight,
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bool use_bilinear_filtering)
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{
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BBitmap *source ((BBitmap *) bitmap);
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BBitmap combined (source->Bounds (), B_RGBA32);
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BRect bounds;
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int x, y, bit;
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BView *vw;
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uint32_t source_mask;
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unsigned long pixel;
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if (combined.InitCheck () != B_OK)
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return;
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if (combined.ImportBits (source) != B_OK)
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return;
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bounds = source->Bounds ();
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if (source->ColorSpace () == B_RGB32)
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source_mask = 255u << 24;
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else
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source_mask = 0;
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for (y = 0; y < BE_RECT_HEIGHT (bounds); ++y)
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{
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for (x = 0; x < BE_RECT_WIDTH (bounds); ++x)
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{
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bit = haiku_get_pixel (mask, x, y);
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if (bit)
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{
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pixel = haiku_get_pixel (bitmap, x, y);
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haiku_put_pixel ((void *) &combined, x, y,
|
|
source_mask | pixel);
|
|
}
|
|
else
|
|
haiku_put_pixel ((void *) &combined, x, y, 0);
|
|
}
|
|
}
|
|
|
|
vw = get_view (view);
|
|
|
|
vw->SetDrawingMode (B_OP_OVER);
|
|
if (!use_bilinear_filtering)
|
|
vw->DrawBitmap (&combined,
|
|
BRect (dx, dy, dx + width - 1, dy + height - 1),
|
|
BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1));
|
|
else
|
|
vw->DrawBitmap (&combined,
|
|
BRect (dx, dy, dx + width - 1, dy + height - 1),
|
|
BRect (vx, vy, vx + vwidth - 1, vy + vheight - 1),
|
|
B_FILTER_BITMAP_BILINEAR);
|
|
vw->SetDrawingMode (B_OP_COPY);
|
|
}
|