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#include <X11/Fresco/figures.h>
#include <X11/Fresco/fresco.h>
#include <X11/Fresco/layouts.h>
#include <X11/Fresco/widgets.h>
#include <X11/Fresco/Impls/viewers.h>
#include <X11/Fresco/Impls/transform.h>
#include <X11/Fresco/Impls/region.h>
#include <stdio.h>
#include <stdlib.h>
class PageFigure : public GlyphImpl {
public:
PageFigure(Coord width, Coord height);
virtual ~PageFigure();
void request(Glyph::Requisition& r);
void extension(const Glyph::AllocationInfo& a, RegionRef r);
void draw(GlyphTraversalRef t);
private:
Coord w_, h_;
};
PageFigure::PageFigure(Coord w, Coord h) {
w_ = w;
h_ = h;
}
PageFigure::~PageFigure () {}
void PageFigure::draw(GlyphTraversalRef) {}
void PageFigure::request(Glyph::Requisition& r) {
r.x.natural = r.x.maximum = r.x.minimum = w_;
r.y.natural = r.y.maximum = r.y.minimum = h_;
r.x.align = r.y.align = 0.5;
r.z.natural = 0;
}
void PageFigure::extension(const Glyph::AllocationInfo& a, RegionRef r) {
RegionImpl region;
region.lower_.x = 0;
region.lower_.y = 0;
region.lower_.z = 0;
region.upper_.x = w_;
region.upper_.y = h_;
region.upper_.z = 0;
region.xalign_ = region.yalign_ = 0.5;
region.zalign_ = 0;
if (is_not_nil(a.transform)) {
region.transform(a.transform);
}
r->copy(®ion);
}
class FigureViewer : public ViewerImpl {
public:
FigureViewer(Fresco* f);
~FigureViewer();
void need_resize();
Boolean press(GlyphTraversalRef, EventRef);
Boolean drag(GlyphTraversalRef, EventRef);
Boolean release(GlyphTraversalRef, EventRef);
void add(Coord x, Coord y);
protected:
FigureKit figures_;
FigureStyle def_style_;
Glyph root_, figroot_;
Coord width_, height_;
enum { move_tool, create_tool } curtool_;
GlyphRef target_;
Coord start_x_, start_y_;
};
FigureViewer::FigureViewer(Fresco* f) : ViewerImpl(f) {
width_ = 300; height_ = 300;
figures_ = f->figure_kit();
def_style_ = figures_->default_style();
LayoutKit layouts = f->layout_kit();
figroot_ = figures_->group();
Glyph g = new TransformAllocator(0.5, 0.5, 0, 0.5, 0.5, 0);
g->body(figroot_);
root_ = layouts->fixed(g, width_, height_);
body(root_);
figroot_->append(new PageFigure(width_ * 10, height_ * 10));
}
FigureViewer::~FigureViewer() { }
void FigureViewer::need_resize() { }
void FigureViewer::add(Coord x, Coord y) {
static int toggle = 0;
Glyph fig;
if (++toggle%2) {
const float r = 36;
fig = figures_->circle(FigureKit::fill, def_style_, x, y, r);
} else {
const Coord hh=25, hw=25; // half-height,width
fig = figures_->rectangle(
FigureKit::stroke, def_style_, x-hw,y-hh, x+hw, y+hh
);
}
Glyph::AllocationInfoList al;
figroot_->allocations(al);
if (al._length < 1) {
fprintf(stderr, "%d allocations!\n", al._length);
exit(1);
}
Glyph::AllocationInfo& ai = al._buffer[0];
TransformObj figtr = fig->transform();
figtr->postmultiply(ai.transform);
figtr->invert();
figroot_->append(fig);
fig->need_redraw();
fig->need_resize();
Fresco::unref(ai.allocation);
}
Boolean FigureViewer::press(GlyphTraversalRef t, EventRef e) {
const Coord slop = 4;
start_x_ = e->pointer_x();
start_y_ = e->pointer_y();
GlyphTraversal::Operation orig_op;
orig_op = t->swap_op(GlyphTraversal::pick_top);
t->begin_trail(this);
PainterObj p = t->painter();
p->push_clipping();
p->clip_rect(start_x_-slop, start_y_-slop, start_x_+slop, start_y_+slop);
root_->traverse(t);
GlyphTraversal picked = t->picked();
if (is_not_nil(picked)) {
target_ = picked->_c_current_glyph();
curtool_ = move_tool;
} else {
curtool_ = create_tool;
}
p->pop_clipping();
t->end_trail();
return true;
}
Boolean FigureViewer::drag(GlyphTraversalRef, EventRef e) {
if (curtool_ == move_tool) {
TransformObj tx = target_->transform();
if (is_not_nil(tx)) {
Vertex v;
v.x = e->pointer_x() - start_x_;
v.y = e->pointer_y() - start_y_;
start_x_ = e->pointer_x();
start_y_ = e->pointer_y();
target_->need_redraw();
tx->translate(v);
target_->need_redraw();
target_->need_resize();
}
}
return true;
}
Boolean FigureViewer::release(GlyphTraversalRef, EventRef) {
if (curtool_ == create_tool) {
add(start_x_, start_y_);
} else {
Fresco::unref(target_);
}
return true;
}
int main(int argc, char** argv) {
Fresco* f = Fresco_open("Test", argc, argv);
LayoutKit layouts = f->layout_kit();
Viewer fv = new FigureViewer(f);
f->main(fv, layouts->margin(fv, 10.0));
Fresco::unref(f);
return 0;
}
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