335 lines
8.9 KiB
Objective-C
335 lines
8.9 KiB
Objective-C
/*
|
|
* Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
|
|
*
|
|
* This file is part of NetSurf, http://www.netsurf-browser.org/
|
|
*
|
|
* NetSurf 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; version 2 of the License.
|
|
*
|
|
* NetSurf 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <Cocoa/Cocoa.h>
|
|
|
|
#import "cocoa/font.h"
|
|
#import "cocoa/plotter.h"
|
|
#import "cocoa/bitmap.h"
|
|
|
|
#import "desktop/plotters.h"
|
|
#import "desktop/plot_style.h"
|
|
#import "utils/log.h"
|
|
#import "css/utils.h"
|
|
|
|
static void cocoa_plot_render_path(NSBezierPath *path,const plot_style_t *pstyle);
|
|
static void cocoa_plot_path_set_stroke_pattern(NSBezierPath *path,const plot_style_t *pstyle);
|
|
static inline void cocoa_center_pixel( bool x, bool y );
|
|
|
|
static NSRect cocoa_plot_clip_rect;
|
|
|
|
#define colour_red_component( c ) (((c) >> 0) & 0xFF)
|
|
#define colour_green_component( c ) (((c) >> 8) & 0xFF)
|
|
#define colour_blue_component( c ) (((c) >> 16) & 0xFF)
|
|
#define colour_alpha_component( c ) (((c) >> 24) & 0xFF)
|
|
#define colour_from_rgba( r, g, b, a) ((((colour)(r)) << 0) | \
|
|
(((colour)(g)) << 8) | \
|
|
(((colour)(b)) << 16) | \
|
|
(((colour)(a)) << 24))
|
|
#define colour_from_rgb( r, g, b ) colour_from_rgba( (r), (g), (b), 0xFF )
|
|
|
|
NSColor *cocoa_convert_colour( colour clr )
|
|
{
|
|
return [NSColor colorWithDeviceRed: (float)colour_red_component( clr ) / 0xFF
|
|
green: (float)colour_green_component( clr ) / 0xFF
|
|
blue: (float)colour_blue_component( clr ) / 0xFF
|
|
alpha: 1.0];
|
|
}
|
|
|
|
static void cocoa_plot_path_set_stroke_pattern(NSBezierPath *path,const plot_style_t *pstyle)
|
|
{
|
|
static const CGFloat dashed_pattern[2] = { 5.0, 2.0 };
|
|
static const CGFloat dotted_pattern[2] = { 2.0, 2.0 };
|
|
|
|
switch (pstyle->stroke_type) {
|
|
case PLOT_OP_TYPE_DASH:
|
|
[path setLineDash: dashed_pattern count: 2 phase: 0];
|
|
break;
|
|
|
|
case PLOT_OP_TYPE_DOT:
|
|
[path setLineDash: dotted_pattern count: 2 phase: 0];
|
|
break;
|
|
|
|
default:
|
|
// ignore
|
|
break;
|
|
}
|
|
|
|
[path setLineWidth: cocoa_px_to_pt( pstyle->stroke_width > 0 ? pstyle->stroke_width : 1 )];
|
|
}
|
|
|
|
static bool plot_line(int x0, int y0, int x1, int y1, const plot_style_t *pstyle)
|
|
{
|
|
if (pstyle->stroke_type == PLOT_OP_TYPE_NONE) return true;
|
|
|
|
[NSGraphicsContext saveGraphicsState];
|
|
[NSBezierPath clipRect: cocoa_plot_clip_rect];
|
|
|
|
NSBezierPath *path = [NSBezierPath bezierPath];
|
|
[path moveToPoint: cocoa_point( x0, y0 )];
|
|
[path lineToPoint: cocoa_point( x1, y1 )];
|
|
cocoa_plot_path_set_stroke_pattern( path, pstyle );
|
|
|
|
const bool horizontal = y0 == y1;
|
|
const bool vertical = x0 == x1;
|
|
const bool oddThickness = pstyle->stroke_width != 0 ? (pstyle->stroke_width % 2) != 0 : true;
|
|
|
|
if (oddThickness) cocoa_center_pixel( !horizontal, !vertical );
|
|
|
|
[cocoa_convert_colour( pstyle->stroke_colour ) set];
|
|
[path stroke];
|
|
|
|
[NSGraphicsContext restoreGraphicsState];
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *pstyle)
|
|
{
|
|
NSRect rect = cocoa_rect( x0, y0, x1, y1 );
|
|
NSBezierPath *path = [NSBezierPath bezierPathWithRect: rect];
|
|
cocoa_plot_render_path( path, pstyle );
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool plot_text(int x, int y, const char *text, size_t length,
|
|
const plot_font_style_t *fstyle)
|
|
{
|
|
[NSGraphicsContext saveGraphicsState];
|
|
[NSBezierPath clipRect: cocoa_plot_clip_rect];
|
|
|
|
cocoa_draw_string( cocoa_px_to_pt( x ), cocoa_px_to_pt( y ), text, length, fstyle );
|
|
|
|
[NSGraphicsContext restoreGraphicsState];
|
|
|
|
return true;
|
|
}
|
|
|
|
void cocoa_set_clip( NSRect rect )
|
|
{
|
|
cocoa_plot_clip_rect = rect;
|
|
}
|
|
|
|
static bool plot_clip(const struct rect *clip)
|
|
{
|
|
cocoa_plot_clip_rect = cocoa_rect( clip->x0, clip->y0, clip->x1, clip->y1 );
|
|
return true;
|
|
}
|
|
|
|
void cocoa_plot_render_path(NSBezierPath *path,const plot_style_t *pstyle)
|
|
{
|
|
[NSGraphicsContext saveGraphicsState];
|
|
[NSBezierPath clipRect: cocoa_plot_clip_rect];
|
|
|
|
if (pstyle->fill_type != PLOT_OP_TYPE_NONE) {
|
|
[cocoa_convert_colour( pstyle->fill_colour ) setFill];
|
|
[path fill];
|
|
}
|
|
|
|
if (pstyle->stroke_type != PLOT_OP_TYPE_NONE) {
|
|
if (pstyle->stroke_width == 0 || pstyle->stroke_width % 2 != 0) cocoa_center_pixel( true, true );
|
|
|
|
cocoa_plot_path_set_stroke_pattern(path,pstyle);
|
|
|
|
[cocoa_convert_colour( pstyle->stroke_colour ) set];
|
|
|
|
[path stroke];
|
|
}
|
|
|
|
[NSGraphicsContext restoreGraphicsState];
|
|
}
|
|
|
|
static bool plot_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *pstyle)
|
|
{
|
|
NSBezierPath *path = [NSBezierPath bezierPath];
|
|
[path appendBezierPathWithArcWithCenter: NSMakePoint( x, y ) radius: radius
|
|
startAngle: angle1 endAngle: angle2
|
|
clockwise: NO];
|
|
|
|
cocoa_plot_render_path( path, pstyle);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool plot_disc(int x, int y, int radius, const plot_style_t *pstyle)
|
|
{
|
|
NSBezierPath *path = [NSBezierPath bezierPathWithOvalInRect:
|
|
NSMakeRect( x - radius, y-radius, 2*radius, 2*radius )];
|
|
|
|
cocoa_plot_render_path( path, pstyle );
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool plot_polygon(const int *p, unsigned int n, const plot_style_t *pstyle)
|
|
{
|
|
if (n <= 1) return true;
|
|
|
|
NSBezierPath *path = [NSBezierPath bezierPath];
|
|
[path moveToPoint: cocoa_point( p[0], p[1] )];
|
|
for (unsigned i = 1; i < n; i++) {
|
|
[path lineToPoint: cocoa_point( p[2*i], p[2*i+1] )];
|
|
}
|
|
[path closePath];
|
|
|
|
cocoa_plot_render_path( path, pstyle );
|
|
|
|
return true;
|
|
}
|
|
|
|
/* complex path (for SVG) */
|
|
static bool plot_path(const float *p, unsigned int n, colour fill, float width,
|
|
colour c, const float transform[6])
|
|
{
|
|
if (n == 0) return true;
|
|
|
|
if (*p != PLOTTER_PATH_MOVE) {
|
|
LOG(("Path does not start with move"));
|
|
return false;
|
|
}
|
|
|
|
NSBezierPath *path = [NSBezierPath bezierPath];
|
|
|
|
#define NEXT_POINT() NSMakePoint( *p++, *p++ )
|
|
|
|
while (n--) {
|
|
switch ((int)*p++) {
|
|
case PLOTTER_PATH_MOVE: {
|
|
const NSPoint pt = NEXT_POINT();
|
|
[path moveToPoint: pt];
|
|
break;
|
|
}
|
|
|
|
case PLOTTER_PATH_LINE: {
|
|
const NSPoint pt = NEXT_POINT();
|
|
[path lineToPoint: pt];
|
|
break;
|
|
}
|
|
|
|
case PLOTTER_PATH_BEZIER: {
|
|
const NSPoint cp1 = NEXT_POINT();
|
|
const NSPoint cp2 = NEXT_POINT();
|
|
const NSPoint ep = NEXT_POINT();
|
|
[path curveToPoint: ep controlPoint1: cp1 controlPoint2: cp2];
|
|
break;
|
|
}
|
|
|
|
case PLOTTER_PATH_CLOSE:
|
|
[path closePath];
|
|
break;
|
|
|
|
default:
|
|
LOG(("Invalid path"));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
#undef NEXT_POINT
|
|
|
|
[path setLineWidth: width];
|
|
|
|
CGContextRef context = [[NSGraphicsContext currentContext] graphicsPort];
|
|
CGContextSaveGState( context );
|
|
|
|
CGContextClipToRect( context, NSRectToCGRect( cocoa_plot_clip_rect ) );
|
|
|
|
CGContextConcatCTM( context, CGAffineTransformMake( transform[0], transform[1], transform[2],
|
|
transform[3], transform[4], transform[5] ) );
|
|
|
|
if (fill != NS_TRANSPARENT) {
|
|
[cocoa_convert_colour( fill ) setFill];
|
|
[path fill];
|
|
}
|
|
|
|
if (c != NS_TRANSPARENT) {
|
|
cocoa_center_pixel( true, true );
|
|
[cocoa_convert_colour( c ) set];
|
|
[path stroke];
|
|
}
|
|
|
|
CGContextRestoreGState( context );
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Image */
|
|
static bool plot_bitmap(int x, int y, int width, int height,
|
|
struct bitmap *bitmap, colour bg,
|
|
bitmap_flags_t flags)
|
|
{
|
|
CGContextRef context = [[NSGraphicsContext currentContext] graphicsPort];
|
|
CGContextSaveGState( context );
|
|
|
|
CGContextClipToRect( context, NSRectToCGRect( cocoa_plot_clip_rect ) );
|
|
|
|
const bool tileX = flags & BITMAPF_REPEAT_X;
|
|
const bool tileY = flags & BITMAPF_REPEAT_Y;
|
|
|
|
CGImageRef img = cocoa_get_cgimage( bitmap );
|
|
|
|
CGRect rect = NSRectToCGRect( cocoa_rect_wh( x, y, width, height ) );
|
|
|
|
if (tileX || tileY) {
|
|
CGContextDrawTiledImage( context, rect, img );
|
|
} else {
|
|
CGContextDrawImage( context, rect, img );
|
|
}
|
|
|
|
CGContextRestoreGState( context );
|
|
|
|
return true;
|
|
}
|
|
|
|
const struct plotter_table cocoa_plotters = {
|
|
.clip = plot_clip,
|
|
.arc = plot_arc,
|
|
.disc = plot_disc,
|
|
.rectangle = plot_rectangle,
|
|
.line = plot_line,
|
|
.polygon = plot_polygon,
|
|
|
|
.path = plot_path,
|
|
|
|
.bitmap = plot_bitmap,
|
|
|
|
.text = plot_text,
|
|
|
|
.option_knockout = true
|
|
};
|
|
|
|
|
|
CGFloat cocoa_scale_factor;
|
|
static const CGFloat points_per_inch = 72.0;
|
|
static CGFloat cocoa_half_pixel;
|
|
|
|
void cocoa_update_scale_factor( void )
|
|
{
|
|
const CGFloat scale = [[NSScreen mainScreen] userSpaceScaleFactor];
|
|
cocoa_scale_factor = scale == 1.0 ? 1.0 : 1.0 / scale;
|
|
cocoa_half_pixel = 0.5 * cocoa_scale_factor;
|
|
nscss_screen_dpi = FLTTOFIX( points_per_inch * scale );
|
|
}
|
|
|
|
static inline void cocoa_center_pixel( bool x, bool y )
|
|
{
|
|
NSAffineTransform *transform = [NSAffineTransform transform];
|
|
[transform translateXBy: x ? cocoa_half_pixel : 0.0 yBy: y ? cocoa_half_pixel : 0.0];
|
|
[transform concat];
|
|
}
|