mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-15 14:16:07 -06:00
447 lines
9.3 KiB
C++
447 lines
9.3 KiB
C++
#include "RichText.h"
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namespace Upp {
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double DistanceFromSegment(Pointf P, Pointf P0, Pointf P1, Pointf *p = NULL)
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{
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Pointf v = P1 - P0;
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Pointf w = P - P0;
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auto Dot = [](Pointf a, Pointf b) { return a.x * b.x + a.y * b.y; };
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double c1 = Dot(w, v);
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double c2 = Dot(v, v);
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if(p)
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*p = Null;
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if(c1 <= 0)
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return Distance(P, P0);
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if(c1 >= c2)
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return Distance(P, P1);
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Pointf sp = P0 + c1 / c2 * v;
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if(p)
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*p = sp;
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return Distance(P, sp);
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}
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Index<String> DiagramItem::LineCap = { "none", "arrow", "round" };
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void DiagramItem::Reset()
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{
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shape = SHAPE_RECT;
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qtf.Clear();
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width = 2;
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ink = Black();
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paper = White();
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blob_id = 0;
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flip_horz = false;
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flip_vert = false;
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aspect_ratio = false;
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rotate = 0;
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cap[0] = cap[1] = CAP_NONE;
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dash = 0;
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}
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void Point2::Normalize()
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{
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if(pt[0].x > pt[1].x)
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Swap(pt[0].x, pt[1].x);
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if(pt[0].y > pt[1].y)
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Swap(pt[0].y, pt[1].y);
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}
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void DiagramItem::FixPosition()
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{
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double x = min(pt[0].x, pt[1].x);
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if(x < 0) {
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pt[0].x -= x;
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pt[1].x -= x;
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}
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double y = min(pt[0].y, pt[1].y);
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if(y < 0) {
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pt[0].y -= y;
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pt[1].y -= y;
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}
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auto Clamp = [](Pointf& p) {
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p.x = clamp(p.x, 0.0, 10000.0);
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p.y = clamp(p.y, 0.0, 10000.0);
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};
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Clamp(pt[0]);
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Clamp(pt[1]);
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if(IsLine())
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return;
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if(pt[1].x - pt[0].x < 8)
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pt[1].x = pt[0].x + 8;
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if(pt[1].y - pt[0].y < 8)
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pt[1].y = pt[0].y + 8;
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}
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bool DiagramItem::IsClick(Point p, const Diagram& diagram, bool relaxed) const
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{
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if(IsLine())
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return DistanceFromSegment(p, pt[0], pt[1]) < width + 10;
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Rectf rect = GetRect();
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Pointf cp = rect.CenterPoint();
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if(rotate) {
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p -= cp;
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p = Rotation(-1).Transform(p);
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p += cp;
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}
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if(!rect.Contains(p))
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return false;
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if(shape == SHAPE_IMAGE || relaxed)
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return true;
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Image test = MakeValue(
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[&] {
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return String((const char *)&shape, sizeof(shape));
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},
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[&](Value& v) {
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ImagePainter p(64, 64);
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p.Clear(RGBAZero());
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DiagramItem m = *this;
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m.paper = Blue();
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m.ink = Blue();
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m.pt[0] = Pointf(0, 0);
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m.pt[1] = Pointf(64, 64);
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m.Paint(p, diagram);
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Image img = p.GetResult();
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v = img;
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return img.GetLength() * sizeof(RGBA);
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}
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).To<Image>();
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return test[clamp(int(64 * (p.y - rect.top) / rect.GetHeight()), 0, 63)]
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[clamp(int(64 * (p.x - rect.left) / rect.GetWidth()), 0, 63)].a;
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}
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bool DiagramItem::IsTextClick(Point p0) const
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{
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Zoom zoom = Diagram::TextZoom();
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double z = zoom.AsDouble();
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RichText txt = ParseQTF(qtf);
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Rect r = GetRect();
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Rect page;
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Pointf p;
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int cx = (int)Distance(pt[0], pt[1]);
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if(cx < 16)
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return false;
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if(IsLine()) {
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int txt_cy = txt.GetHeight(zoom, cx);
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Pointf sp;
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double dist = DistanceFromSegment(p0, pt[0], pt[1], &sp);
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p.y = txt_cy + 10 - dist;
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if(p0.y >= sp.y) // only consider text above
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return false;
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p.x = Distance(pt[0].x < pt[1].x ? pt[0] : pt[1], sp);
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if(dist < 25 && abs(p.x - cx / 2) < min(10, cx / 8))
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return true;
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p = p / z;
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page.top = 0;
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page.left = 0;
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page.right = int(cx / z);
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}
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else {
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int txt_cy = txt.GetHeight(zoom, r.GetWidth());
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r = RectC(r.left, r.top + (r.GetHeight() - txt_cy) / 2, r.GetWidth(), txt_cy);
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Rect r2 = r;
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int x = r.CenterPoint().x;
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int dx = min(20, int(abs(pt[0].x - pt[1].x) / 6));
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r2.left = x - dx;
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r2.right = x + dx;
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if(r2.Contains(p0))
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return true;
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if(!r.Contains(p0))
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return false;
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p = (Pointf)p0 / z;
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page = (Rectf)r / z;
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}
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page.bottom = INT_MAX;
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int pos = txt.GetPos((int)p.x, PageY(0, (int)p.y), page);
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return pos < txt.GetLength() && txt.GetRichPos(pos).chr != '\n' && txt.GetCaret(pos, page).Contains(p);
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}
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Rect DiagramItem::GetTextEditRect() const
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{
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if(IsLine()) {
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int d = max(10, int(Distance(pt[0], pt[1]) + 0.5));
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Point c = (pt[0] + pt[1]) / 2;
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return Rect(c.x - d / 2, c.y, c.x + d, c.y);
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}
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return GetRect();
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}
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void DiagramItem::Save(StringBuffer& r) const
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{
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r << Shape[clamp(shape, 0, Shape.GetCount() - 1)] << ' ';
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r << pt[0].x << ' ' << pt[0].y << ' ' << pt[1].x << ' ' << pt[1].y;
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if(qtf.GetCount())
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r << " " << AsCString(qtf);
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auto col = [&](Color c) {
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if(IsNull(c))
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return String("null");
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return Format("%02x%02x%02x", (int)c.GetR(), (int)c.GetG(), (int)c.GetB());
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};
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if(rotate)
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r << " rotate " << rotate;
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if(blob_id.GetCount())
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r << " blob_id " << AsCString(blob_id);
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if(ink != Black())
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r << " stroke " << col(ink);
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if(paper != White())
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r << " fill " << col(paper);
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if(width != 2)
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r << " width " << width;
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if(cap[0] != CAP_NONE)
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r << " start " << LineCap[clamp(cap[0], 0, LineCap.GetCount())];
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if(cap[1] != CAP_NONE)
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r << " end " << LineCap[clamp(cap[1], 0, LineCap.GetCount())];
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if(dash)
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r << " dash " << dash;
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if(flip_vert)
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r << " flip_vert";
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if(flip_horz)
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r << " flip_horz";
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if(aspect_ratio)
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r << " aspect_ratio";
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r << ";";
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}
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void DiagramItem::Load(CParser& p, const Diagram& diagram)
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{
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Reset();
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int q = Shape.Find(p.ReadId());
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if(q < 0)
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p.ThrowError("Unknown element");
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shape = q;
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this->pt[0].x = p.ReadDouble();
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this->pt[0].y = p.ReadDouble();
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this->pt[1].x = p.ReadDouble();
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this->pt[1].y = p.ReadDouble();
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auto col = [&] {
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if(p.Id("null"))
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return Color(Null);
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dword x = p.ReadNumber(16);
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return Color(byte(x >> 16), byte(x >> 8), byte(x));
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};
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for(;;) {
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auto Cap = [&] { return max(LineCap.Find(p.ReadId()), 0); };
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if(p.Char(';'))
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break;
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else
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if(p.IsString())
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qtf = p.ReadString();
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else
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if(p.Id("rotate"))
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rotate = clamp(p.ReadDouble(), -360.0, 360.0);
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else
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if(p.Id("stroke"))
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ink = col();
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else
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if(p.Id("fill"))
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paper = col();
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else
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if(p.Id("width"))
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width = clamp(p.ReadDouble(), 0.0, 50.0);
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else
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if(p.Id("flip_vert"))
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flip_vert = true;
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else
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if(p.Id("flip_horz"))
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flip_horz = true;
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else
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if(p.Id("aspect_ratio"))
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aspect_ratio = true;
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else
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if(p.Id("start"))
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cap[0] = Cap();
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else
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if(p.Id("end"))
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cap[1] = Cap();
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else
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if(p.Id("dash"))
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dash = clamp(p.ReadInt(), 0, (int)DASH_COUNT);
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else
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if(p.Id("blob_id"))
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blob_id = p.ReadString();
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else
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p.Skip();
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}
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FixPosition();
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}
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Size Diagram::GetSize() const
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{
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if(!IsNull(size))
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return size;
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if(item.GetCount() == 0)
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return Size(0, 0);
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Pointf tl, br;
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tl = br = item[0].GetRect().TopLeft();
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for(const DiagramItem& m : item) {
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Rectf r = m.GetRect();
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Pointf cp = r.CenterPoint();
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Xform2D rot;
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if(m.rotate)
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rot = m.Rotation();
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auto Do = [&](Pointf p) {
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if(m.rotate) {
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p -= cp;
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p = rot.Transform(p);
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p += cp;
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}
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tl.x = min(tl.x, p.x);
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tl.y = min(tl.y, p.y);
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br.x = max(br.x, p.x);
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br.y = max(br.y, p.y);
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};
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Do(r.TopLeft());
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Do(r.TopRight());
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Do(r.BottomLeft());
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Do(r.BottomRight());
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}
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Sizef fsz = br + tl;
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Sizef isz = img.GetSize();
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if(img_hd)
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isz /= 2;
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return Size((int)ceil(max(isz.cx, fsz.cx)), (int)ceil(max(isz.cy, fsz.cy)));
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}
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String Diagram::AddBlob(const String& data)
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{
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if(IsNull(data))
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return Null;
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String id = MD5String(data);
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blob.GetAdd(id) = data;
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return id;
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}
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String Diagram::GetBlob(const String& id) const
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{
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return blob.Get(id, Null);
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}
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Image Diagram::GetBlobImage(const String& id) const
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{
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Value v = MakeValue(
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[&] {
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return id;
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},
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[&](Value& v) {
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Image m = StreamRaster::LoadStringAny(GetBlob(id));
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v = m;
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return int(m.GetLength() * sizeof(RGBA));
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}
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);
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return v.Is<Image>() ? (Image)v : Image();
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}
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Rectf Diagram::GetBlobSvgPathBoundingBox(const String& id) const
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{
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Value v = MakeValue(
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[&] {
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return id;
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},
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[&](Value& v) {
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v = GetSVGPathBoundingBox(GetBlob(id));
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return 32;
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}
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);
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return v.Is<Rectf>() ? (Rectf)v : (Rectf)Null;
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}
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void Diagram::Paint(Painter& w, const Diagram::PaintInfo& p) const
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{
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w.Begin();
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if(img_hd)
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w.Scale(0.5);
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w.DrawImage(0, 0, img);
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w.End();
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Index<Pointf> conn;
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if(p.display_grid)
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for(const DiagramItem& m : item)
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if(m.IsLine())
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conn << m.pt[0] << m.pt[1];
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for(int i = 0; i < item.GetCount(); i++) {
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dword style = 0;
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if(i == p.cursor)
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style = Display::CURSOR;
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else
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if(p.sel.Find(i) >= 0)
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style = Display::SELECT;
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if(p.editor)
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style |= DiagramItem::EDITOR;
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if(p.display_grid)
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style |= DiagramItem::GRID;
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if(p.dark)
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style |= DiagramItem::DARK;
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if(p.fast)
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style |= DiagramItem::FAST;
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item[i].Paint(w, *this, style, &conn);
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}
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}
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void Diagram::Serialize(Stream& s)
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{
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s % img % item % size;
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}
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void Diagram::Save(StringBuffer& r) const
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{
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if(!IsNull(size))
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r << "size " << size.cx << " " << size.cy << ";\n";
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if(!IsNull(img)) {
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r << "bk_image ";
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if(img_hd)
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r << "HD ";
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r << AsCString(Base64Encode(PNGEncoder().SaveString(img))) << ";\n";
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}
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VectorMap<String, String> sd;
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for(const DiagramItem& m : item) {
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int id = 0;
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if(m.blob_id.GetCount()) {
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int q = blob.Find(m.blob_id);
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if(q >= 0) {
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id = sd.Find(m.blob_id);
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if(id < 0) {
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sd.Add(m.blob_id, blob[q]);
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id = sd.GetCount();
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}
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else
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id++;
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}
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}
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m.Save(r);
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r << '\n';
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}
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for(int i = 0; i < sd.GetCount(); i++)
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r << "blob " << AsCString(Base64Encode(sd[i]), 20000, " ") << ";\n";
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}
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void Diagram::Load(CParser& p)
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{
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item.Clear();
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blob.Clear();
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while(!p.IsEof())
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if(p.Id("size")) {
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size.cx = clamp(p.ReadInt(), 1, 10000);
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size.cy = clamp(p.ReadInt(), 1, 10000);
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p.Char(';');
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}
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else
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if(p.Id("bk_image")) {
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img_hd = p.Id("HD");
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img = StreamRaster::LoadStringAny(Base64Decode(p.ReadString()));
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p.Char(';');
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}
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else
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if(p.Id("blob")) {
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String data = Base64Decode(p.ReadString());
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blob.GetAdd(MD5String(data)) = data;
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p.Char(';');
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}
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else
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item.Add().Load(p, *this);
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}
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}
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