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netsurf/amiga/plotters.c

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/*
* Copyright 2008,2009 Chris Young <chris@unsatisfactorysoftware.co.uk>
*
* 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 "amiga/plotters.h"
#include "amiga/bitmap.h"
#include "amiga/font.h"
#include <proto/Picasso96API.h>
#include <intuition/intuition.h>
#include <graphics/rpattr.h>
#include <graphics/gfxmacros.h>
#include <graphics/gfxbase.h>
#include "amiga/utf8.h"
#include "desktop/options.h"
#ifdef __amigaos4__
#include <graphics/blitattr.h>
#include <graphics/composite.h>
#endif
#include "utils/log.h"
#include <math.h>
#include <assert.h>
#include <proto/exec.h>
#include "amiga/gui.h"
#include "utils/utils.h"
static void ami_bitmap_tile_hook(struct Hook *hook,struct RastPort *rp,struct BackFillMessage *bfmsg);
struct bfbitmap {
struct BitMap *bm;
ULONG width;
ULONG height;
int offsetx;
int offsety;
};
#ifndef M_PI /* For some reason we don't always get this from math.h */
#define M_PI 3.14159265358979323846
#endif
#ifdef NS_AMIGA_CAIRO
#include <cairo/cairo.h>
#include <cairo/cairo-amigaos.h>
#endif
#define PATT_DOT 0xAAAA
#define PATT_DASH 0xCCCC
#define PATT_LINE 0xFFFF
/* Define the below to get additional debug */
#undef AMI_PLOTTER_DEBUG
struct plotter_table plot;
const struct plotter_table amiplot = {
.rectangle = ami_rectangle,
.line = ami_line,
.polygon = ami_polygon,
.clip = ami_clip,
.text = ami_text,
.disc = ami_disc,
.arc = ami_arc,
.bitmap = ami_bitmap_tile,
.path = ami_path,
.option_knockout = true,
};
#ifdef NS_AMIGA_CAIRO
void ami_cairo_set_colour(cairo_t *cr,colour c)
{
int r, g, b;
r = c & 0xff;
g = (c & 0xff00) >> 8;
b = (c & 0xff0000) >> 16;
cairo_set_source_rgba(glob->cr, r / 255.0,
g / 255.0, b / 255.0, 1.0);
}
void ami_cairo_set_solid(cairo_t *cr)
{
double dashes = 0;
cairo_set_dash(glob->cr, &dashes, 0, 0);
}
void ami_cairo_set_dotted(cairo_t *cr)
{
double cdashes = 1;
cairo_set_dash(glob->cr, &cdashes, 1, 0);
}
void ami_cairo_set_dashed(cairo_t *cr)
{
double cdashes = 3;
cairo_set_dash(glob->cr, &cdashes, 1, 0);
}
#endif
void ami_init_layers(struct gui_globals *gg, ULONG width, ULONG height)
{
/* init shared bitmaps *
* Height is set to screen width to give enough space for thumbnails *
* Also applies to the further gfx/layers functions and memory below */
struct BitMap *friend = NULL; /* Required to be NULL for Cairo and ARGB bitmaps */
if(nsoption_int(redraw_tile_size_x) <= 0) nsoption_set_int(redraw_tile_size_x, scrn->Width);
if(nsoption_int(redraw_tile_size_y) <= 0) nsoption_set_int(redraw_tile_size_y, scrn->Height);
if(!width) width = nsoption_int(redraw_tile_size_x);
if(!height) height = nsoption_int(redraw_tile_size_y);
gg->layerinfo = NewLayerInfo();
gg->areabuf = AllocVec(100,MEMF_PRIVATE | MEMF_CLEAR);
gg->tmprasbuf = AllocVec(width*height,MEMF_PRIVATE | MEMF_CLEAR);
gg->bm = p96AllocBitMap(width, height, 32,
BMF_INTERLEAVED, friend, RGBFB_A8R8G8B8);
if(!gg->bm) warn_user("NoMemory","");
gg->rp = AllocVec(sizeof(struct RastPort), MEMF_PRIVATE | MEMF_CLEAR);
if(!gg->rp) warn_user("NoMemory","");
InitRastPort(gg->rp);
gg->rp->BitMap = gg->bm;
/* Is all this safe to do to an existing window RastPort? */
SetDrMd(gg->rp,BGBACKFILL);
gg->rp->Layer = CreateUpfrontLayer(gg->layerinfo,gg->rp->BitMap,0,0,
width-1, height-1, LAYERSIMPLE, NULL);
InstallLayerHook(gg->rp->Layer,LAYERS_NOBACKFILL);
gg->rp->AreaInfo = AllocVec(sizeof(struct AreaInfo),MEMF_PRIVATE | MEMF_CLEAR);
if((!gg->areabuf) || (!gg->rp->AreaInfo)) warn_user("NoMemory","");
InitArea(gg->rp->AreaInfo,gg->areabuf,100/5);
gg->rp->TmpRas = AllocVec(sizeof(struct TmpRas),MEMF_PRIVATE | MEMF_CLEAR);
if((!gg->tmprasbuf) || (!gg->rp->TmpRas)) warn_user("NoMemory","");
InitTmpRas(gg->rp->TmpRas, gg->tmprasbuf, width*height);
#ifdef NS_AMIGA_CAIRO
gg->surface = cairo_amigaos_surface_create(gg->rp->BitMap);
gg->cr = cairo_create(gg->surface);
#endif
}
void ami_free_layers(struct gui_globals *gg)
{
#ifdef NS_AMIGA_CAIRO
cairo_destroy(gg->cr);
cairo_surface_destroy(gg->surface);
#endif
if(gg->rp)
{
DeleteLayer(0,gg->rp->Layer);
FreeVec(gg->rp->TmpRas);
FreeVec(gg->rp->AreaInfo);
FreeVec(gg->rp);
}
FreeVec(gg->tmprasbuf);
FreeVec(gg->areabuf);
DisposeLayerInfo(gg->layerinfo);
p96FreeBitMap(gg->bm);
}
void ami_clearclipreg(struct gui_globals *gg)
{
struct Region *reg = NULL;
reg = InstallClipRegion(gg->rp->Layer,NULL);
if(reg) DisposeRegion(reg);
gg->rect.MinX = 0;
gg->rect.MinY = 0;
gg->rect.MaxX = scrn->Width-1;
gg->rect.MaxY = scrn->Height-1;
}
bool ami_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_rectangle()"));
#endif
if (style->fill_type != PLOT_OP_TYPE_NONE) {
if(nsoption_int(cairo_renderer) < 2)
{
SetRPAttrs(glob->rp, RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
TAG_DONE);
RectFill(glob->rp, x0, y0, x1-1, y1-1);
}
else
{
#ifdef NS_AMIGA_CAIRO
ami_cairo_set_colour(glob->cr, style->fill_colour);
ami_cairo_set_solid(glob->cr);
cairo_set_line_width(glob->cr, 0);
cairo_rectangle(glob->cr, x0, y0, x1 - x0, y1 - y0);
cairo_fill(glob->cr);
cairo_stroke(glob->cr);
#endif
}
}
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
if(nsoption_int(cairo_renderer) < 2)
{
glob->rp->PenWidth = style->stroke_width;
glob->rp->PenHeight = style->stroke_width;
switch (style->stroke_type) {
case PLOT_OP_TYPE_SOLID: /**< Solid colour */
default:
glob->rp->LinePtrn = PATT_LINE;
break;
case PLOT_OP_TYPE_DOT: /**< Doted plot */
glob->rp->LinePtrn = PATT_DOT;
break;
case PLOT_OP_TYPE_DASH: /**< dashed plot */
glob->rp->LinePtrn = PATT_DASH;
break;
}
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->stroke_colour),
TAG_DONE);
Move(glob->rp, x0,y0);
Draw(glob->rp, x1, y0);
Draw(glob->rp, x1, y1);
Draw(glob->rp, x0, y1);
Draw(glob->rp, x0, y0);
glob->rp->PenWidth = 1;
glob->rp->PenHeight = 1;
glob->rp->LinePtrn = PATT_LINE;
}
else
{
#ifdef NS_AMIGA_CAIRO
ami_cairo_set_colour(glob->cr, style->stroke_colour);
switch (style->stroke_type) {
case PLOT_OP_TYPE_SOLID: /**< Solid colour */
default:
ami_cairo_set_solid(glob->cr);
break;
case PLOT_OP_TYPE_DOT: /**< Doted plot */
ami_cairo_set_dotted(glob->cr);
break;
case PLOT_OP_TYPE_DASH: /**< dashed plot */
ami_cairo_set_dashed(glob->cr);
break;
}
if (style->stroke_width == 0)
cairo_set_line_width(glob->cr, 1);
else
cairo_set_line_width(glob->cr, style->stroke_width);
cairo_rectangle(glob->cr, x0, y0, x1 - x0, y1 - y0);
cairo_stroke(glob->cr);
#endif
}
}
return true;
}
bool ami_line(int x0, int y0, int x1, int y1, const plot_style_t *style)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_line()"));
#endif
if(nsoption_int(cairo_renderer) < 2)
{
glob->rp->PenWidth = style->stroke_width;
glob->rp->PenHeight = style->stroke_width;
switch (style->stroke_type) {
case PLOT_OP_TYPE_SOLID: /**< Solid colour */
default:
glob->rp->LinePtrn = PATT_LINE;
break;
case PLOT_OP_TYPE_DOT: /**< Doted plot */
glob->rp->LinePtrn = PATT_DOT;
break;
case PLOT_OP_TYPE_DASH: /**< dashed plot */
glob->rp->LinePtrn = PATT_DASH;
break;
}
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->stroke_colour),
TAG_DONE);
Move(glob->rp,x0,y0);
Draw(glob->rp,x1,y1);
glob->rp->PenWidth = 1;
glob->rp->PenHeight = 1;
glob->rp->LinePtrn = PATT_LINE;
}
else
{
#ifdef NS_AMIGA_CAIRO
ami_cairo_set_colour(glob->cr, style->stroke_colour);
switch (style->stroke_type) {
case PLOT_OP_TYPE_SOLID: /**< Solid colour */
default:
ami_cairo_set_solid(glob->cr);
break;
case PLOT_OP_TYPE_DOT: /**< Doted plot */
ami_cairo_set_dotted(glob->cr);
break;
case PLOT_OP_TYPE_DASH: /**< dashed plot */
ami_cairo_set_dashed(glob->cr);
break;
}
if (style->stroke_width == 0)
cairo_set_line_width(glob->cr, 1);
else
cairo_set_line_width(glob->cr, style->stroke_width);
/* core expects horizontal and vertical lines to be on pixels, not
* between pixels */
cairo_move_to(glob->cr, (x0 == x1) ? x0 + 0.5 : x0,
(y0 == y1) ? y0 + 0.5 : y0);
cairo_line_to(glob->cr, (x0 == x1) ? x1 + 0.5 : x1,
(y0 == y1) ? y1 + 0.5 : y1);
cairo_stroke(glob->cr);
#endif
}
return true;
}
bool ami_polygon(const int *p, unsigned int n, const plot_style_t *style)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_polygon()"));
#endif
int k;
if(nsoption_int(cairo_renderer) < 1)
{
ULONG cx,cy;
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
RPTAG_OPenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
// RPTAG_OPenColor,0xffffffff,
TAG_DONE);
AreaMove(glob->rp,p[0],p[1]);
for(k=1;k<n;k++)
{
AreaDraw(glob->rp,p[k*2],p[(k*2)+1]);
}
AreaEnd(glob->rp);
BNDRYOFF(glob->rp);
}
else
{
#ifdef NS_AMIGA_CAIRO
ami_cairo_set_colour(glob->cr, style->fill_colour);
ami_cairo_set_solid(glob->cr);
cairo_set_line_width(glob->cr, 0);
cairo_move_to(glob->cr, p[0], p[1]);
for (k = 1; k != n; k++) {
cairo_line_to(glob->cr, p[k * 2], p[k * 2 + 1]);
}
cairo_fill(glob->cr);
cairo_stroke(glob->cr);
#endif
}
return true;
}
bool ami_clip(const struct rect *clip)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_clip()"));
#endif
struct Region *reg = NULL;
if(glob->rp->Layer)
{
reg = NewRegion();
glob->rect.MinX = clip->x0;
glob->rect.MinY = clip->y0;
glob->rect.MaxX = clip->x1-1;
glob->rect.MaxY = clip->y1-1;
OrRectRegion(reg,&glob->rect);
reg = InstallClipRegion(glob->rp->Layer,reg);
if(reg) DisposeRegion(reg);
}
#ifdef NS_AMIGA_CAIRO
if(nsoption_int(cairo_renderer) == 2)
{
cairo_reset_clip(glob->cr);
cairo_rectangle(glob->cr, clip->x0, clip->y0,
clip->x1 - clip->x0, clip->y1 - clip->y0);
cairo_clip(glob->cr);
}
#endif
return true;
}
bool ami_text(int x, int y, const char *text, size_t length,
const plot_font_style_t *fstyle)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_text()"));
#endif
ami_unicode_text(glob->rp,text,length,fstyle,x,y);
return true;
}
bool ami_disc(int x, int y, int radius, const plot_style_t *style)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_disc()"));
#endif
if(nsoption_int(cairo_renderer) < 2)
{
if (style->fill_type != PLOT_OP_TYPE_NONE) {
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
TAG_DONE);
AreaCircle(glob->rp,x,y,radius);
AreaEnd(glob->rp);
}
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->stroke_colour),
TAG_DONE);
DrawEllipse(glob->rp,x,y,radius,radius);
}
}
else
{
#ifdef NS_AMIGA_CAIRO
if (style->fill_type != PLOT_OP_TYPE_NONE) {
ami_cairo_set_colour(glob->cr, style->fill_colour);
ami_cairo_set_solid(glob->cr);
cairo_set_line_width(glob->cr, 0);
cairo_arc(glob->cr, x, y, radius, 0, M_PI * 2);
cairo_fill(glob->cr);
cairo_stroke(glob->cr);
}
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
ami_cairo_set_colour(glob->cr, style->stroke_colour);
ami_cairo_set_solid(glob->cr);
cairo_set_line_width(glob->cr, 1);
cairo_arc(glob->cr, x, y, radius, 0, M_PI * 2);
cairo_stroke(glob->cr);
}
#endif
}
return true;
}
bool ami_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *style)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_arc()"));
#endif
if(nsoption_int(cairo_renderer) >= 1)
{
#ifdef NS_AMIGA_CAIRO
ami_cairo_set_colour(glob->cr, style->fill_colour);
ami_cairo_set_solid(glob->cr);
cairo_set_line_width(glob->cr, 1);
cairo_arc(glob->cr, x, y, radius,
(angle1 + 90) * (M_PI / 180),
(angle2 + 90) * (M_PI / 180));
cairo_stroke(glob->cr);
#endif
}
else
{
/* TODO: gfx.lib plotter needs arc support */
/* http://www.crbond.com/primitives.htm
CommonFuncsPPC.lha */
SetRPAttrs(glob->rp,
RPTAG_APenColor,
p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
TAG_DONE);
// DrawArc(glob->rp,x,y,(float)angle1,(float)angle2,radius);
}
return true;
}
static bool ami_bitmap(int x, int y, int width, int height, struct bitmap *bitmap)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_bitmap()"));
#endif
struct BitMap *tbm;
if(!width || !height) return true;
if(((x + width) < glob->rect.MinX) ||
((y + height) < glob->rect.MinY) ||
(x > glob->rect.MaxX) ||
(y > glob->rect.MaxY))
return true;
tbm = ami_getcachenativebm(bitmap,width,height,glob->rp->BitMap);
if(!tbm) return true;
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] ami_bitmap() got native bitmap"));
#endif
if(GfxBase->LibNode.lib_Version >= 53) // AutoDoc says v52, but this function isn't in OS4.0, so checking for v53 (OS4.1)
{
uint32 comptype = COMPOSITE_Src;
if(!bitmap->opaque)
comptype = COMPOSITE_Src_Over_Dest;
CompositeTags(comptype,tbm,glob->rp->BitMap,
COMPTAG_Flags,COMPFLAG_IgnoreDestAlpha,
COMPTAG_DestX,glob->rect.MinX,
COMPTAG_DestY,glob->rect.MinY,
COMPTAG_DestWidth,glob->rect.MaxX - glob->rect.MinX + 1,
COMPTAG_DestHeight,glob->rect.MaxY - glob->rect.MinY + 1,
COMPTAG_SrcWidth,width,
COMPTAG_SrcHeight,height,
COMPTAG_OffsetX,x,
COMPTAG_OffsetY,y,
TAG_DONE);
}
else
{
BltBitMapTags(BLITA_Width,width,
BLITA_Height,height,
BLITA_Source,tbm,
BLITA_Dest,glob->rp,
BLITA_DestX,x,
BLITA_DestY,y,
BLITA_SrcType,BLITT_BITMAP,
BLITA_DestType,BLITT_RASTPORT,
// BLITA_Mask,0xFF,
BLITA_UseSrcAlpha,!bitmap->opaque,
TAG_DONE);
}
if(tbm != bitmap->nativebm)
{
p96FreeBitMap(tbm);
}
return true;
}
bool ami_bitmap_tile(int x, int y, int width, int height,
struct bitmap *bitmap, colour bg,
bitmap_flags_t flags)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_bitmap_tile()"));
#endif
int xf,yf,xm,ym,oy,ox;
struct BitMap *tbm = NULL;
struct Hook *bfh = NULL;
struct bfbitmap bfbm;
bool repeat_x = (flags & BITMAPF_REPEAT_X);
bool repeat_y = (flags & BITMAPF_REPEAT_Y);
if((width == 0) || (height == 0)) return true;
if(!(repeat_x || repeat_y))
return ami_bitmap(x, y, width, height, bitmap);
/* If it is a one pixel transparent image, we are wasting our time */
if((bitmap->opaque == false) && (bitmap->width == 1) && (bitmap->height == 1))
return true;
tbm = ami_getcachenativebm(bitmap,width,height,glob->rp->BitMap);
if(!tbm) return true;
ox = x;
oy = y;
/* get left most tile position */
for (; ox > 0; ox -= width)
;
/* get top most tile position */
for (; oy > 0; oy -= height)
;
if(ox<0) ox = -ox;
if(oy<0) oy = -oy;
if(repeat_x)
{
xf = glob->rect.MaxX;
xm = glob->rect.MinX;
}
else
{
xf = x + width;
xm = x;
}
if(repeat_y)
{
yf = glob->rect.MaxY;
ym = glob->rect.MinY;
}
else
{
yf = y + height;
ym = y;
}
if(bitmap->opaque)
{
bfh = CreateBackFillHook(BFHA_BitMap,tbm,
BFHA_Width,width,
BFHA_Height,height,
BFHA_OffsetX,ox,
BFHA_OffsetY,oy,
TAG_DONE);
}
else
{
bfbm.bm = tbm;
bfbm.width = width;
bfbm.height = height;
bfbm.offsetx = ox;
bfbm.offsety = oy;
bfh = AllocVec(sizeof(struct Hook),MEMF_CLEAR);
bfh->h_Entry = (HOOKFUNC)ami_bitmap_tile_hook;
bfh->h_SubEntry = 0;
bfh->h_Data = &bfbm;
}
InstallLayerHook(glob->rp->Layer,bfh);
EraseRect(glob->rp,xm,ym,xf,yf);
InstallLayerHook(glob->rp->Layer,LAYERS_NOBACKFILL);
if(bitmap->opaque) DeleteBackFillHook(bfh);
else FreeVec(bfh);
if(tbm != bitmap->nativebm)
{
p96FreeBitMap(tbm);
}
return true;
}
static void ami_bitmap_tile_hook(struct Hook *hook,struct RastPort *rp,struct BackFillMessage *bfmsg)
{
int xf,yf;
struct bfbitmap *bfbm = (struct bfbitmap *)hook->h_Data;
/* tile down and across to extents (bfmsg->Bounds.MinX)*/
for (xf = -bfbm->offsetx; xf < bfmsg->Bounds.MaxX; xf += bfbm->width) {
for (yf = -bfbm->offsety; yf < bfmsg->Bounds.MaxY; yf += bfbm->height) {
if(GfxBase->LibNode.lib_Version >= 53) // AutoDoc says v52, but this function isn't in OS4.0, so checking for v53 (OS4.1)
{
CompositeTags(COMPOSITE_Src_Over_Dest,bfbm->bm,rp->BitMap,
COMPTAG_Flags,COMPFLAG_IgnoreDestAlpha,
COMPTAG_DestX,bfmsg->Bounds.MinX,
COMPTAG_DestY,bfmsg->Bounds.MinY,
COMPTAG_DestWidth,bfmsg->Bounds.MaxX - bfmsg->Bounds.MinX + 1,
COMPTAG_DestHeight,bfmsg->Bounds.MaxY - bfmsg->Bounds.MinY + 1,
COMPTAG_SrcWidth,bfbm->width,
COMPTAG_SrcHeight,bfbm->height,
COMPTAG_OffsetX,xf,
COMPTAG_OffsetY,yf,
TAG_DONE);
}
else
{
BltBitMapTags(BLITA_Width,bfbm->width,
BLITA_Height,bfbm->height,
BLITA_Source,bfbm->bm,
BLITA_Dest,rp,
BLITA_DestX,xf,
BLITA_DestY,yf,
BLITA_SrcType,BLITT_BITMAP,
BLITA_DestType,BLITT_RASTPORT,
BLITA_UseSrcAlpha,TRUE,
TAG_DONE);
}
}
}
}
bool ami_group_start(const char *name)
{
/** optional */
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_group_start()"));
#endif
return false;
}
bool ami_group_end(void)
{
/** optional */
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_group_end()"));
#endif
return false;
}
bool ami_flush(void)
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_flush()"));
#endif
return true;
}
bool ami_path(const float *p, unsigned int n, colour fill, float width,
colour c, const float transform[6])
{
#ifdef AMI_PLOTTER_DEBUG
LOG(("[ami_plotter] Entered ami_path()"));
#endif
/* For SVG only, because it needs Bezier curves we are going to cheat
and insist on Cairo */
#ifdef NS_AMIGA_CAIRO
/* We should probably check if the off-screen bitmap is 32-bit and render
* using Cairo regardless if it is. For now, we respect user preferences.
*/
if(nsoption_int(cairo_renderer) >= 1)
{
unsigned int i;
cairo_matrix_t old_ctm, n_ctm;
if (n == 0)
return true;
if (p[0] != PLOTTER_PATH_MOVE) {
LOG(("Path does not start with move"));
return false;
}
/* Save CTM */
cairo_get_matrix(glob->cr, &old_ctm);
/* Set up line style and width */
cairo_set_line_width(glob->cr, 1);
ami_cairo_set_solid(glob->cr);
/* Load new CTM */
n_ctm.xx = transform[0];
n_ctm.yx = transform[1];
n_ctm.xy = transform[2];
n_ctm.yy = transform[3];
n_ctm.x0 = transform[4];
n_ctm.y0 = transform[5];
cairo_set_matrix(glob->cr, &n_ctm);
/* Construct path */
for (i = 0; i < n; ) {
if (p[i] == PLOTTER_PATH_MOVE) {
cairo_move_to(glob->cr, p[i+1], p[i+2]);
i += 3;
} else if (p[i] == PLOTTER_PATH_CLOSE) {
cairo_close_path(glob->cr);
i++;
} else if (p[i] == PLOTTER_PATH_LINE) {
cairo_line_to(glob->cr, p[i+1], p[i+2]);
i += 3;
} else if (p[i] == PLOTTER_PATH_BEZIER) {
cairo_curve_to(glob->cr, p[i+1], p[i+2],
p[i+3], p[i+4],
p[i+5], p[i+6]);
i += 7;
} else {
LOG(("bad path command %f", p[i]));
/* Reset matrix for safety */
cairo_set_matrix(glob->cr, &old_ctm);
return false;
}
}
/* Restore original CTM */
cairo_set_matrix(glob->cr, &old_ctm);
/* Now draw path */
if (fill != NS_TRANSPARENT) {
ami_cairo_set_colour(glob->cr,fill);
if (c != NS_TRANSPARENT) {
/* Fill & Stroke */
cairo_fill_preserve(glob->cr);
ami_cairo_set_colour(glob->cr,c);
cairo_stroke(glob->cr);
} else {
/* Fill only */
cairo_fill(glob->cr);
}
} else if (c != NS_TRANSPARENT) {
/* Stroke only */
ami_cairo_set_colour(glob->cr,c);
cairo_stroke(glob->cr);
}
}
#endif
return true;
}
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