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authorGravatar Hanspeter Portner <dev@open-music-kontrollers.ch>2018-05-07 19:02:49 +0200
committerGravatar Hanspeter Portner <dev@open-music-kontrollers.ch>2018-05-07 19:02:49 +0200
commit1457b922e1d7c277c558bd3fb247caba6b8df07a (patch)
tree80d2b97cda3be4288c3e4c4096f16c8cf3f5c7fe /canvas.lv2/render.h
parent81b2369388cd8a63611b8fe32f1701f73a80b100 (diff)
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strip canvas headers, migrate to meson.
Diffstat (limited to 'canvas.lv2/render.h')
-rw-r--r--canvas.lv2/render.h592
1 files changed, 0 insertions, 592 deletions
diff --git a/canvas.lv2/render.h b/canvas.lv2/render.h
deleted file mode 100644
index 2882c87..0000000
--- a/canvas.lv2/render.h
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- * Copyright (c) 2016 Hanspeter Portner (dev@open-music-kontrollers.ch)
- *
- * This is free software: you can redistribute it and/or modify
- * it under the terms of the Artistic License 2.0 as published by
- * The Perl Foundation.
- *
- * This source 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
- * Artistic License 2.0 for more details.
- *
- * You should have received a copy of the Artistic License 2.0
- * along the source as a COPYING file. If not, obtain it from
- * http://www.perlfoundation.org/artistic_license_2_0.
- */
-
-#ifndef _LV2_CANVAS_RENDER_H
-#define _LV2_CANVAS_RENDER_H
-
-#include <assert.h>
-
-#include <canvas.lv2/canvas.h>
-
-#include <cairo/cairo.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define LV2_CANVAS_NUM_METHODS 26
-
-typedef struct _LV2_Canvas_Meth LV2_Canvas_Meth;
-typedef struct _LV2_Canvas LV2_Canvas;
-typedef void (*LV2_Canvas_Func)(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body);
-
-struct _LV2_Canvas_Meth {
- LV2_URID command;
- LV2_Canvas_Func func;
-};
-
-struct _LV2_Canvas {
- LV2_Canvas_URID urid;
- LV2_Canvas_Meth methods [LV2_CANVAS_NUM_METHODS];
-};
-
-static inline const float *
-_lv2_canvas_render_get_float_vecs(LV2_Canvas_URID *urid, const LV2_Atom *body,
- uint32_t *n)
-{
- const LV2_Atom_Vector *vec = (const LV2_Atom_Vector *)body;
- const float *flt = LV2_ATOM_CONTENTS_CONST(LV2_Atom_Vector, vec);
- *n = (vec->atom.type == urid->forge.Vector)
- && (vec->body.child_type == urid->forge.Float)
- && (vec->body.child_size == sizeof(float))
- ? (vec->atom.size - sizeof(LV2_Atom_Vector_Body)) / vec->body.child_size
- : 0;
-
- return flt;
-}
-
-static inline const float *
-_lv2_canvas_render_get_float_vec(LV2_Canvas_URID *urid, const LV2_Atom *body,
- uint32_t n)
-{
- uint32_t N;
- const float *flt = _lv2_canvas_render_get_float_vecs(urid, body, &N);
-
- return n == N ? flt : NULL;
-}
-
-static inline const void *
-_lv2_canvas_render_get_type(const LV2_Atom *body, LV2_URID type)
-{
- return body->type == type
- ? LV2_ATOM_BODY_CONST(body)
- : NULL;
-}
-
-static inline void
-_lv2_canvas_render_beginPath(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_new_sub_path(ctx);
-}
-
-static inline void
-_lv2_canvas_render_closePath(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_close_path(ctx);
-}
-
-static inline void
-_lv2_canvas_render_arc(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 5);
-
- if(v)
- {
- cairo_arc(ctx, v[0], v[1], v[2], v[3], v[4]);
- }
-}
-
-static inline void
-_lv2_canvas_render_curveTo(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 6);
-
- if(v)
- {
- cairo_curve_to(ctx, v[0], v[1], v[2], v[3], v[4], v[5]);
- }
-}
-
-static inline void
-_lv2_canvas_render_lineTo(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 2);
-
- if(v)
- {
- cairo_line_to(ctx, v[0], v[1]);
- }
-}
-
-static inline void
-_lv2_canvas_render_moveTo(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 2);
-
- if(v)
- {
- cairo_move_to(ctx, v[0], v[1]);
- }
-}
-
-static inline void
-_lv2_canvas_render_rectangle(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 4);
-
- if(v)
- {
- cairo_rectangle(ctx, v[0], v[1], v[2], v[3]);
- }
-}
-
-static inline void
-_lv2_canvas_render_polyline(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- uint32_t N;
- const float *v = _lv2_canvas_render_get_float_vecs(urid, body, &N);
-
- if(v)
- {
- for(uint32_t i = 0; i < 2; i += 2)
- {
- cairo_move_to(ctx, v[i], v[i+1]);
- }
-
- for(uint32_t i = 2; i < N; i += 2)
- {
- cairo_line_to(ctx, v[i], v[i+1]);
- }
- }
-}
-
-static inline void
-_lv2_canvas_render_style(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const int64_t *v = _lv2_canvas_render_get_type(body, urid->forge.Long);
-
- if(v)
- {
- const float r = (float)((*v >> 24) & 0xff) / 0xff;
- const float g = (float)((*v >> 16) & 0xff) / 0xff;
- const float b = (float)((*v >> 8) & 0xff) / 0xff;
- const float a = (float)((*v >> 0) & 0xff) / 0xff;
-
- cairo_set_source_rgba(ctx, r, g, b, a);
- }
-}
-
-static inline void
-_lv2_canvas_render_lineWidth(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_type(body, urid->forge.Float);
-
- if(v)
- {
- cairo_set_line_width(ctx, *v);
- }
-}
-
-static inline void
-_lv2_canvas_render_lineDash(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 2);
-
- if(v)
- {
- const double d[2] = {v[0], v[1]};
- cairo_set_dash(ctx, d, 2, 0);
- }
-}
-
-static inline void
-_lv2_canvas_render_lineCap(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const LV2_URID *v = _lv2_canvas_render_get_type(body, urid->forge.URID);
-
- if(v)
- {
- cairo_line_cap_t cap = CAIRO_LINE_CAP_BUTT;
-
- if(*v == urid->Canvas_lineCapButt)
- cap = CAIRO_LINE_CAP_BUTT;
- else if(*v == urid->Canvas_lineCapRound)
- cap = CAIRO_LINE_CAP_ROUND;
- else if(*v == urid->Canvas_lineCapSquare)
- cap = CAIRO_LINE_CAP_SQUARE;
-
- cairo_set_line_cap(ctx, cap);
- }
-}
-
-static inline void
-_lv2_canvas_render_lineJoin(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const LV2_URID *v = _lv2_canvas_render_get_type(body, urid->forge.URID);
-
- if(v)
- {
- cairo_line_join_t join = CAIRO_LINE_JOIN_MITER;
-
- if(*v == urid->Canvas_lineJoinMiter)
- join = CAIRO_LINE_JOIN_MITER;
- else if(*v == urid->Canvas_lineJoinRound)
- join = CAIRO_LINE_JOIN_ROUND;
- else if(*v == urid->Canvas_lineJoinBevel)
- join = CAIRO_LINE_JOIN_BEVEL;
-
- cairo_set_line_join(ctx, join);
- }
-}
-
-static inline void
-_lv2_canvas_render_miterLimit(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_type(body, urid->forge.Float);
-
- if(v)
- {
- cairo_set_miter_limit(ctx, *v);
- }
-}
-
-static inline void
-_lv2_canvas_render_stroke(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_stroke(ctx);
-}
-
-static inline void
-_lv2_canvas_render_fill(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_fill(ctx);
-}
-
-static inline void
-_lv2_canvas_render_clip(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_clip(ctx);
-}
-
-static inline void
-_lv2_canvas_render_save(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_save(ctx);
-}
-
-static inline void
-_lv2_canvas_render_restore(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_restore(ctx);
-}
-
-static inline void
-_lv2_canvas_render_translate(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 2);
-
- if(v)
- {
- cairo_translate(ctx, v[0], v[1]);
- }
-}
-
-static inline void
-_lv2_canvas_render_scale(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 2);
-
- if(v)
- {
- cairo_scale(ctx, v[0], v[1]);
- }
-}
-
-static inline void
-_lv2_canvas_render_rotate(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_type(body, urid->forge.Float);
-
- if(v)
- {
- cairo_rotate(ctx, *v);
- }
-}
-
-static inline void
-_lv2_canvas_render_transform(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_float_vec(urid, body, 6);
-
- if(v)
- {
- const cairo_matrix_t matrix = {
- .xx = v[0],
- .xy = v[1],
- .x0 = v[2],
- .yy = v[3],
- .yx = v[4],
- .y0 = v[5]
- };
-
- cairo_transform(ctx, &matrix);
- }
-}
-
-static inline void
-_lv2_canvas_render_reset(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- cairo_identity_matrix(ctx);
-}
-
-static inline void
-_lv2_canvas_render_fontSize(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const float *v = _lv2_canvas_render_get_type(body, urid->forge.Float);
-
- if(v)
- {
- cairo_set_font_size(ctx, *v);
- }
-}
-
-static inline void
-_lv2_canvas_render_fillText(cairo_t *ctx,
- LV2_Canvas_URID *urid, const LV2_Atom *body)
-{
- const char *v = _lv2_canvas_render_get_type(body, urid->forge.String);
-
- if(v)
- {
- cairo_text_extents_t extents;
- cairo_text_extents(ctx, v, &extents);
- const float dx = extents.width/2 + extents.x_bearing;
- const float dy = extents.height/2 + extents.y_bearing;
- cairo_rel_move_to(ctx, -dx, -dy);
- cairo_show_text(ctx, v);
- }
-}
-
-static inline void
-_lv2_canvas_qsort(LV2_Canvas_Meth *A, int n)
-{
- if(n < 2)
- return;
-
- LV2_Canvas_Meth *p = A;
-
- int i = -1;
- int j = n;
-
- while(true)
- {
- do {
- i += 1;
- } while(A[i].command < p->command);
-
- do {
- j -= 1;
- } while(A[j].command > p->command);
-
- if(i >= j)
- break;
-
- const LV2_Canvas_Meth tmp = A[i];
- A[i] = A[j];
- A[j] = tmp;
- }
-
- _lv2_canvas_qsort(A, j + 1);
- _lv2_canvas_qsort(A + j + 1, n - j - 1);
-}
-
-static inline LV2_Canvas_Meth *
-_lv2_canvas_bsearch(LV2_URID p, LV2_Canvas_Meth *a, int n)
-{
- LV2_Canvas_Meth *base = a;
-
- for(int N = n, half; N > 1; N -= half)
- {
- half = N/2;
- LV2_Canvas_Meth *dst = &base[half];
- base = (dst->command > p) ? base : dst;
- }
-
- return (base->command == p) ? base : NULL;
-}
-
-static inline void
-lv2_canvas_init(LV2_Canvas *canvas, LV2_URID_Map *map)
-{
- lv2_canvas_urid_init(&canvas->urid, map);
-
- unsigned ptr = 0;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_BeginPath;
- canvas->methods[ptr++].func = _lv2_canvas_render_beginPath;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_ClosePath;
- canvas->methods[ptr++].func = _lv2_canvas_render_closePath;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Arc;
- canvas->methods[ptr++].func = _lv2_canvas_render_arc;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_CurveTo;
- canvas->methods[ptr++].func = _lv2_canvas_render_curveTo;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_LineTo;
- canvas->methods[ptr++].func = _lv2_canvas_render_lineTo;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_MoveTo;
- canvas->methods[ptr++].func = _lv2_canvas_render_moveTo;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Rectangle;
- canvas->methods[ptr++].func = _lv2_canvas_render_rectangle;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_PolyLine;
- canvas->methods[ptr++].func = _lv2_canvas_render_polyline;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Style;
- canvas->methods[ptr++].func = _lv2_canvas_render_style;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_LineWidth;
- canvas->methods[ptr++].func = _lv2_canvas_render_lineWidth;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_LineDash;
- canvas->methods[ptr++].func = _lv2_canvas_render_lineDash;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_LineCap;
- canvas->methods[ptr++].func = _lv2_canvas_render_lineCap;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_LineJoin;
- canvas->methods[ptr++].func = _lv2_canvas_render_lineJoin;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_MiterLimit;
- canvas->methods[ptr++].func = _lv2_canvas_render_miterLimit;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Stroke;
- canvas->methods[ptr++].func = _lv2_canvas_render_stroke;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Fill;
- canvas->methods[ptr++].func = _lv2_canvas_render_fill;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Clip;
- canvas->methods[ptr++].func = _lv2_canvas_render_clip;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Save;
- canvas->methods[ptr++].func = _lv2_canvas_render_save;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Restore;
- canvas->methods[ptr++].func = _lv2_canvas_render_restore;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Translate;
- canvas->methods[ptr++].func = _lv2_canvas_render_translate;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Scale;
- canvas->methods[ptr++].func = _lv2_canvas_render_scale;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Rotate;
- canvas->methods[ptr++].func = _lv2_canvas_render_rotate;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Transform;
- canvas->methods[ptr++].func = _lv2_canvas_render_transform;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_Reset;
- canvas->methods[ptr++].func = _lv2_canvas_render_reset;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_FontSize;
- canvas->methods[ptr++].func = _lv2_canvas_render_fontSize;
-
- canvas->methods[ptr].command = canvas->urid.Canvas_FillText;
- canvas->methods[ptr++].func = _lv2_canvas_render_fillText;
-
- assert(ptr == LV2_CANVAS_NUM_METHODS);
-
- _lv2_canvas_qsort(canvas->methods, LV2_CANVAS_NUM_METHODS);
-}
-
-static inline bool
-lv2_canvas_render(LV2_Canvas *canvas, cairo_t *ctx, const LV2_Atom_Tuple *tup)
-{
- LV2_Canvas_URID *urid = &canvas->urid;
-
- if(!tup || (tup->atom.type != urid->forge.Tuple) )
- return false;
-
- // save state
- cairo_save(ctx);
-
- // clear surface
- cairo_set_operator(ctx, CAIRO_OPERATOR_CLEAR);
- cairo_paint(ctx);
-
- // default attributes
- cairo_set_operator(ctx, CAIRO_OPERATOR_SOURCE);
- cairo_set_font_size(ctx, 0.1);
- cairo_set_line_width(ctx, 0.01);
- cairo_set_source_rgba(ctx, 1.0, 1.0, 1.0, 1.0);
-
- LV2_ATOM_TUPLE_FOREACH(tup, itm)
- {
- if(lv2_atom_forge_is_object_type(&urid->forge, itm->type))
- {
- const LV2_Atom_Object *obj = (const LV2_Atom_Object *)itm;
- const LV2_Atom *body = NULL;
-
- lv2_atom_object_get(obj, urid->Canvas_body, &body, 0);
-
- LV2_Canvas_Meth *meth = _lv2_canvas_bsearch(obj->body.otype,
- canvas->methods, LV2_CANVAS_NUM_METHODS);
-
- if(meth)
- {
- meth->func(ctx, urid, body);
- }
- }
- }
-
- // save state
- cairo_restore(ctx);
-
- // flush
- cairo_surface_t *surface = cairo_get_target(ctx);
- cairo_surface_flush(surface);
-
- return true;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // CANVAS_IMPLEMENTATION