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-rw-r--r--include/toys/lpe-framework.h77
-rw-r--r--include/toys/path-cairo.h57
-rw-r--r--include/toys/toy-framework-2.h451
3 files changed, 585 insertions, 0 deletions
diff --git a/include/toys/lpe-framework.h b/include/toys/lpe-framework.h
new file mode 100644
index 0000000..9de5aa0
--- /dev/null
+++ b/include/toys/lpe-framework.h
@@ -0,0 +1,77 @@
+/**
+ * \file lpe-framework.h
+ * \brief A framework for writing an Inkscape Live Path Effect toy.
+ *
+ * Instead of using the standard toy framework, one can use this LPE
+ * framework when creating an LPE for Inkscape. When new 2geom functions
+ * are required for the LPE, adding this functionality directly in Inkscape
+ * greatly increases compile times. Using this framework, one only has to
+ * rebuild 2geom, which speeds up development considerably. (Think about
+ * how much of Inkscape will have to be rebuild if you change/add something
+ * in point.h ...)
+ * An example of how to use this framework is lpe.test.cpp.
+ *//*
+ * Copyright 2009 Johan Engelen <goejendaagh@zonnet.nl>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef _2GEOM_LPE_TOY_FRAMEWORK_H_
+#define _2GEOM_LPE_TOY_FRAMEWORK_H_
+
+/**
+ * This should greatly simplify creating toy code for a Live Path Effect (LPE) for Inkscape
+ */
+
+
+#include <toys/toy-framework-2.h>
+#include <2geom/pathvector.h>
+
+class LPEToy: public Toy {
+public:
+ LPEToy();
+ void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override;
+ virtual Geom::PathVector
+ doEffect_path (Geom::PathVector const & path_in);
+ virtual Geom::Piecewise<Geom::D2<Geom::SBasis> >
+ doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in);
+
+ /** this boolean defaults to false, it concatenates the input path to one pwd2,
+ * instead of normally 'splitting' the path into continuous pwd2 paths. */
+ bool concatenate_before_pwd2;
+ PointSetHandle curve_handle;
+};
+
+#endif // _2GEOM_LPE_TOY_FRAMEWORK_H_
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+ */
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/include/toys/path-cairo.h b/include/toys/path-cairo.h
new file mode 100644
index 0000000..4c0403f
--- /dev/null
+++ b/include/toys/path-cairo.h
@@ -0,0 +1,57 @@
+#ifndef PATH_CAIRO
+#define PATH_CAIRO
+
+
+#include <cairo.h>
+#include <2geom/line.h>
+#include <2geom/sbasis.h>
+#include <2geom/sbasis-2d.h>
+#include <2geom/d2.h>
+#include <2geom/piecewise.h>
+#include <2geom/path.h>
+#include <2geom/convex-hull.h>
+#include <vector>
+#include <string>
+
+typedef struct _cairo cairo_t;
+
+void cairo_curve(cairo_t *cr, Geom::Curve const &c);
+void cairo_rectangle(cairo_t *cr, Geom::Rect const &r);
+void cairo_convex_hull(cairo_t *cr, Geom::ConvexHull const &r);
+void cairo_path(cairo_t *cr, Geom::Path const &p);
+void cairo_path(cairo_t *cr, Geom::PathVector const &p);
+void cairo_path_stitches(cairo_t *cr, Geom::Path const &p);
+void cairo_path_stitches(cairo_t *cr, Geom::PathVector const &p);
+
+void cairo_d2_sb(cairo_t *cr, Geom::D2<Geom::SBasis> const &p);
+void cairo_d2_sb_handles(cairo_t *cr, Geom::D2<Geom::SBasis> const &p);
+void cairo_d2_sb2d(cairo_t* cr, Geom::D2<Geom::SBasis2d> const &sb2, Geom::Point dir, double width);
+void cairo_sb2d(cairo_t* cr, Geom::SBasis2d const &sb2, Geom::Point dir, double width);
+
+void cairo_d2_pw_sb(cairo_t *cr, Geom::D2<Geom::Piecewise<Geom::SBasis> > const &p);
+void cairo_pw_d2_sb(cairo_t *cr, Geom::Piecewise<Geom::D2<Geom::SBasis> > const &p);
+
+
+void draw_line(cairo_t *cr, const Geom::Line& l, const Geom::Rect& r);
+void draw_line(cairo_t *cr, Geom::Point n, double d, Geom::Rect r);
+void draw_line(cairo_t *cr, Geom::Point a, Geom::Point b, Geom::Rect r);
+
+void draw_line_seg(cairo_t *cr, Geom::Point a, Geom::Point b);
+void draw_line_seg_with_arrow(cairo_t *cr, Geom::Point a, Geom::Point b, double dangle = 15*M_PI/180, double radius = 20);
+void draw_spot(cairo_t *cr, Geom::Point h);
+void draw_handle(cairo_t *cr, Geom::Point h);
+void draw_cross(cairo_t *cr, Geom::Point h);
+void draw_circ(cairo_t *cr, Geom::Point h);
+void draw_ray(cairo_t *cr, Geom::Point h, Geom::Point dir);
+void draw_ray(cairo_t *cr, const Geom::Ray& ray, const Geom::Rect& r);
+void draw_line_segment(cairo_t *cr, const Geom::LineSegment& ls, const Geom::Rect& r);
+
+void cairo_move_to(cairo_t *cr, Geom::Point p1);
+void cairo_line_to(cairo_t *cr, Geom::Point p1);
+void cairo_curve_to(cairo_t *cr, Geom::Point p1, Geom::Point p2, Geom::Point p3);
+
+// H in [0,360)
+// S, V, R, G, B in [0,1]
+void convertHSVtoRGB(const double H, const double S, const double V,
+ double& R, double& G, double& B);
+#endif
diff --git a/include/toys/toy-framework-2.h b/include/toys/toy-framework-2.h
new file mode 100644
index 0000000..5504dfd
--- /dev/null
+++ b/include/toys/toy-framework-2.h
@@ -0,0 +1,451 @@
+
+#ifndef _2GEOM_TOY_FRAMEWORK2_H_
+#define _2GEOM_TOY_FRAMEWORK2_H_
+
+
+
+#include <cairo.h>
+#include <gtk/gtk.h>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include <assert.h>
+#include <2geom/exception.h>
+#include <2geom/point.h>
+#include <2geom/geom.h>
+#include <2geom/sbasis.h>
+#include <2geom/d2.h>
+#include <sched.h>
+#include <toys/path-cairo.h>
+
+using std::vector;
+
+//Utility functions
+double uniform();
+
+void draw_text(cairo_t *cr, Geom::Point pos, const char* txt, bool bottom = false, const char* fontdesc = "Sans");
+void draw_text(cairo_t *cr, Geom::Point pos, const std::string& txt, bool bottom = false, const std::string& fontdesc = "Sans");
+void draw_number(cairo_t *cr, Geom::Point pos, int num, std::string name=std::string(), bool bottom = true);
+void draw_number(cairo_t *cr, Geom::Point pos, unsigned num, std::string name=std::string(), bool bottom = true);
+void draw_number(cairo_t *cr, Geom::Point pos, double num, std::string name=std::string(), bool bottom = true);
+
+struct colour{
+ double r,g,b,a;
+ colour(double r, double g, double b, double a) : r(r), g(g), b(b), a(a) {}
+ static colour from_hsv( float H, // hue shift (radians)
+ float S, // saturation shift (scalar)
+ float V, // value multiplier (scalar)
+ float A
+ );
+ static colour from_hsl( float H, // hue shift (radians)
+ float S, // saturation shift (scalar)
+ float L, // value multiplier (scalar)
+ float A
+ );
+};
+void cairo_set_source_rgba(cairo_t* cr, colour c);
+
+class Handle{
+public:
+ std::string name;
+ float rgb[3];
+ Handle() {rgb[0] = rgb[1] = rgb[2] = 0;}
+ virtual ~Handle() {}
+ virtual void draw(cairo_t *cr, bool annotes=false) = 0;
+
+ virtual void* hit(Geom::Point pos) = 0;
+ virtual void move_to(void* hit, Geom::Point om, Geom::Point m) = 0;
+ virtual void load(FILE* f)=0;
+ virtual void save(FILE* f)=0;
+};
+
+class Toggle : public Handle{
+public:
+ Geom::Rect bounds;
+ const char* text;
+ bool on;
+ Toggle() : bounds(Geom::Point(0,0), Geom::Point(0,0)), text(""), on(false) {}
+ Toggle(const char* txt, bool v) : bounds(Geom::Point(0,0), Geom::Point(0,0)), text(txt), on(v) {}
+ Toggle(Geom::Rect bnds, const char* txt, bool v) : bounds(bnds), text(txt), on(v) {}
+ void draw(cairo_t *cr, bool annotes = false) override;
+ void toggle();
+ void set(bool state);
+ void handle_click(GdkEventButton* e);
+ void* hit(Geom::Point pos) override;
+ void move_to(void* /*hit*/, Geom::Point /*om*/, Geom::Point /*m*/) override { /* not implemented */ }
+ void load(FILE* /*f*/) override { /* not implemented */ }
+ void save(FILE* /*f*/) override { /* not implemented */ }
+};
+
+
+template< typename T>
+class VectorHandle : public Handle
+{
+ public:
+ VectorHandle()
+ : m_handles()
+ {
+ }
+ void draw(cairo_t *cr, bool annotes=false) override
+ {
+ for (iterator it = m_handles.begin(); it != m_handles.end(); ++it)
+ it->draw(cr, annotes);
+ }
+
+ void* hit(Geom::Point pos) override
+ {
+ void* result = NULL;
+ for (iterator it = m_handles.begin(); it != m_handles.end(); ++it)
+ {
+ result = it->hit(pos);
+ if (result != NULL) break;
+ }
+ return result;
+ }
+
+ void move_to(void* hit, Geom::Point om, Geom::Point m) override
+ {
+ if (hit != NULL)
+ {
+ static_cast<T*>(hit)->move_to(hit, om, m);
+ }
+ }
+
+ void load(FILE* f) override
+ {
+ for (iterator it = m_handles.begin(); it != m_handles.end(); ++it)
+ it->load(f);
+ }
+
+ void save(FILE* f) override
+ {
+ for (iterator it = m_handles.begin(); it != m_handles.end(); ++it)
+ it->save(f);
+ }
+
+ void clear()
+ {
+ m_handles.clear();
+ }
+
+ void reserve(size_t sz)
+ {
+ m_handles.reserve(sz);
+ }
+
+ size_t size() const
+ {
+ return m_handles.size();
+ }
+
+ void push_back (const T& _handle)
+ {
+ m_handles.push_back(_handle);
+ }
+
+ const T& operator[] (size_t i) const
+ {
+ return m_handles.at(i);
+ }
+
+ T& operator[] (size_t i)
+ {
+ return m_handles.at(i);
+ }
+
+ private:
+ typedef typename std::vector<T>::iterator iterator;
+ std::vector<T> m_handles;
+}; // end class VectorHandle
+
+
+class PointHandle : public Handle{
+public:
+ PointHandle(double x, double y) : pos(x,y) {}
+ PointHandle(Geom::Point pt) : pos(pt) {}
+ PointHandle() {}
+ Geom::Point pos;
+ void draw(cairo_t *cr, bool annotes = false) override;
+
+ void* hit(Geom::Point mouse) override;
+ void move_to(void* hit, Geom::Point om, Geom::Point m) override;
+ void load(FILE* f) override;
+ void save(FILE* f) override;
+};
+
+class PointSetHandle : public Handle{
+public:
+ PointSetHandle() {}
+ std::vector<Geom::Point> pts;
+ void draw(cairo_t *cr, bool annotes = false) override;
+
+ void* hit(Geom::Point mouse) override;
+ void move_to(void* hit, Geom::Point om, Geom::Point m) override;
+ void push_back(double x, double y) {pts.emplace_back(x,y);}
+ void push_back(Geom::Point pt) {pts.push_back(pt);}
+ unsigned size() {return pts.size();}
+ Geom::D2<Geom::SBasis> asBezier();
+ void load(FILE* f) override;
+ void save(FILE* f) override;
+};
+
+class RectHandle : public Handle{
+public:
+ RectHandle() {}
+ RectHandle(Geom::Rect pos, bool show_center_handle) : pos(pos), show_center_handle(show_center_handle) {}
+ Geom::Rect pos;
+ bool show_center_handle;
+ void draw(cairo_t *cr, bool annotes = false) override;
+
+ void* hit(Geom::Point mouse) override;
+ void move_to(void* hit, Geom::Point om, Geom::Point m) override;
+ void load(FILE* f) override;
+ void save(FILE* f) override;
+};
+
+
+// used by Slider
+inline std::string default_formatter(double x)
+{
+ std::ostringstream os;
+ os << x;
+ return os.str();
+}
+
+class Slider : public Handle
+{
+ public:
+
+ typedef std::string (*formatter_t) (double );
+ typedef double value_type;
+
+ Slider()
+ : m_handle(), m_pos(Geom::Point(0,0)), m_length(1),
+ m_min(0), m_max(1), m_step(0), m_dir(Geom::X),
+ m_label(""), m_formatter(&default_formatter)
+ {
+ value(0);
+ }
+
+ // pass step = 0 for having a continuos value variation
+ Slider( value_type _min, value_type _max, value_type _step,
+ value_type _value, std::string _label = "" )
+ : m_handle(),m_pos(Geom::Point(0,0)), m_length(1),
+ m_min(_min), m_max(_max), m_step(_step), m_dir(Geom::X),
+ m_label(std::move(_label)), m_formatter(&default_formatter)
+ {
+ value(_value);
+ }
+
+ void set( value_type _min, value_type _max, value_type _step,
+ value_type _value, const std::string& _label = "" )
+ {
+ m_min = _min;
+ m_max = _max;
+ m_step = _step;
+ m_label = _label;
+ value(_value);
+ }
+
+ value_type value() const;
+
+ void value(value_type _value);
+
+ value_type max_value() const
+ {
+ return m_max;
+ }
+
+ void max_value(value_type _value);
+
+ value_type min_value() const
+ {
+ return m_min;
+ }
+
+ void min_value(value_type _value);
+
+ // dir = X horizontal slider dir = Y vertical slider
+ void geometry(Geom::Point _pos, value_type _length, Geom::Dim2 _dir = Geom::X);
+
+ void draw(cairo_t* cr, bool annotate = false) override;
+
+ void formatter( formatter_t _formatter )
+ {
+ m_formatter = _formatter;
+ }
+
+ void* hit(Geom::Point pos) override
+ {
+ if (m_handle.hit(pos) != NULL)
+ return this;
+ return NULL;
+ }
+
+ void move_to(void* hit, Geom::Point om, Geom::Point m) override;
+
+ void load(FILE* f) override
+ {
+ m_handle.load(f);
+ }
+
+ void save(FILE* f) override
+ {
+ m_handle.save(f);
+ }
+
+ private:
+ PointHandle m_handle;
+ Geom::Point m_pos;
+ value_type m_length;
+ value_type m_min, m_max, m_step;
+ int m_dir;
+ std::string m_label;
+ formatter_t m_formatter;
+};
+
+
+
+
+
+class Toy {
+public:
+ vector<Handle*> handles;
+ bool mouse_down = false;
+ Geom::Point old_mouse_point;
+ Handle* selected = nullptr;
+ void* hit_data = nullptr;
+ int canvas_click_button = 0;
+ double notify_offset = 0.0;
+ std::string name;
+ bool show_timings = false;
+ FILE* spool_file = nullptr; // if non-NULL we record all interactions to this file
+
+ Toy() {}
+
+ virtual ~Toy() {}
+
+ virtual void draw(cairo_t *cr, std::ostringstream *notify, int w, int h, bool save, std::ostringstream *timing_stream);
+
+ virtual void mouse_moved(GdkEventMotion* e);
+ virtual void mouse_pressed(GdkEventButton* e);
+ virtual void mouse_released(GdkEventButton* e);
+ virtual void canvas_click(Geom::Point at, int button);
+ virtual void scroll(GdkEventScroll* e);
+
+ virtual void key_hit(GdkEventKey */*e*/) {}
+
+ //Cheapo way of informing the framework what the toy would like drawn for it.
+ virtual bool should_draw_numbers() { return true; }
+ virtual int should_draw_bounds() { return 0; }
+
+ virtual void first_time(int /*argc*/, char** /*argv*/) {}
+
+ virtual void resize_canvas(Geom::Rect const & /*s*/) {}
+ virtual void load(FILE* f);
+ virtual void save(FILE* f);
+};
+
+//Framework Accesors
+void redraw();
+void take_screenshot(const char* file);
+void init(int argc, char **argv, Toy *t, int width=600, int height=600);
+
+void toggle_events(std::vector<Toggle> &ts, GdkEventButton* e);
+void draw_toggles(cairo_t *cr, std::vector<Toggle> &ts);
+Geom::Point read_point(FILE* f);
+
+
+
+
+
+const long long NS_PER_SECOND = 1000000000LL;
+const long long NS_PER_NS = 1;
+
+
+class Timer{
+public:
+ Timer() {}
+ // note that CPU time is tracked per-thread, so the timer is only useful
+ // in the thread it was start()ed from.
+
+ class Time{
+ public:
+ double value;
+ Time(long long /*s*/, long long l) : value(l) {}
+ Time(double v) : value(v) {}
+ Time operator/(double iters) const {
+ return Time(value / iters);
+ }
+ };
+
+ void start() {
+ nsec(start_time);
+ }
+ void lap(long long &ns) {
+ nsec(ns);
+ ns -= start_time;
+ }
+ Time lap() {
+ long long ns;
+ nsec(ns);
+ return Time(start_time, ns - start_time);
+ }
+ void nsec(long long &ns) {
+#if ! (defined(_WIN32) || defined(__APPLE__))
+ clock_gettime(clock, &ts);
+ ns = ts.tv_sec * NS_PER_SECOND + ts.tv_nsec / NS_PER_NS;
+#else
+ ns = 0;
+#endif
+ }
+ /** Ask the OS nicely for a big time slice */
+ void ask_for_timeslice() {
+#ifndef _WIN32
+ sched_yield();
+#endif
+ }
+private:
+ long long start_time;
+#if ! (defined(_WIN32) || defined(__APPLE__))
+ struct timespec ts;
+# ifdef _POSIX_THREAD_CPUTIME
+ static const clockid_t clock = CLOCK_THREAD_CPUTIME_ID;
+# else
+# ifdef CLOCK_MONOTONIC
+ static const clockid_t clock = CLOCK_MONOTONIC;
+# else
+ static const clockid_t clock = CLOCK_REALTIME;
+# endif
+# endif
+#endif
+};
+
+inline std::ostream& operator<<(std::ostream& o, Timer::Time const &t) {
+ double tm = t.value;
+ unsigned prefix = 0;
+ char prefixes[] = "num kMGT";
+ while(prefix < sizeof(prefixes) and tm > 1000) {
+ tm /= 1000.0;
+ prefix += 1;
+ }
+ o << tm << prefixes[prefix] << "s";
+ return o;
+}
+
+
+
+#endif // _2GEOM_TOY_FRAMEWORK2_H_
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+ */
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 04:25:11 +0000