C++ Rect::max方法代码示例

boost::optional<Geom::Point> Line::intersection_with_viewbox (SPDesktop *desktop)
{
    Geom::Rect vb = desktop->get_display_area();
    /* remaining viewbox corners */
    Geom::Point ul (vb.min()[Geom::X], vb.max()[Geom::Y]);
    Geom::Point lr (vb.max()[Geom::X], vb.min()[Geom::Y]);

    std::pair <Geom::Point, Geom::Point> e = side_of_intersection (vb.min(), lr, vb.max(), ul, this->pt, this->v_dir);
    if (e.first == e.second) {
        // perspective line lies outside the canvas
        return boost::optional<Geom::Point>();
    }

    Line line (e.first, e.second);
    return this->intersect (line);
}

std::vector<Geom::Point> Layout::createSelectionShape(iterator const &it_start, iterator const &it_end, Geom::Affine const &transform) const
{
    std::vector<Geom::Point> quads;
    unsigned char_index;
    unsigned end_char_index;

    if (it_start._char_index < it_end._char_index) {
        char_index = it_start._char_index;
        end_char_index = it_end._char_index;
    } else {
        char_index = it_end._char_index;
        end_char_index = it_start._char_index;
    }
    for ( ; char_index < end_char_index ; ) {
        if (_characters[char_index].in_glyph == -1) {
            char_index++;
            continue;
        }
        double char_rotation = _glyphs[_characters[char_index].in_glyph].rotation;
        unsigned span_index = _characters[char_index].in_span;

        Geom::Point top_left, bottom_right;
        if (_path_fitted || char_rotation != 0.0) {
            Geom::Rect box = characterBoundingBox(iterator(this, char_index), &char_rotation);
            top_left = box.min();
            bottom_right = box.max();
            char_index++;
        } else {   // for straight text we can be faster by combining all the character boxes in a span into one box
            double span_x = _spans[span_index].x_start + _spans[span_index].chunk(this).left_x;
            top_left[Geom::X] = span_x + _characters[char_index].x;
            while (char_index < end_char_index && _characters[char_index].in_span == span_index)
                char_index++;
            if (char_index == _characters.size() || _characters[char_index].in_span != span_index)
                bottom_right[Geom::X] = _spans[span_index].x_end + _spans[span_index].chunk(this).left_x;
            else
                bottom_right[Geom::X] = span_x + _characters[char_index].x;

            double baseline_y = _spans[span_index].line(this).baseline_y + _spans[span_index].baseline_shift;
            double vertical_scale = _glyphs.back().vertical_scale;

            if (_directions_are_orthogonal(_blockProgression(), TOP_TO_BOTTOM)) {
                double span_height = vertical_scale * (_spans[span_index].line_height.ascent + _spans[span_index].line_height.descent);
                top_left[Geom::Y] = top_left[Geom::X];
                top_left[Geom::X] = baseline_y - span_height * 0.5;
                bottom_right[Geom::Y] = bottom_right[Geom::X];
                bottom_right[Geom::X] = baseline_y + span_height * 0.5;
            } else {
                top_left[Geom::Y] =  baseline_y - vertical_scale * _spans[span_index].line_height.ascent;
                bottom_right[Geom::Y] = baseline_y + vertical_scale * _spans[span_index].line_height.descent;
            }
        }

        Geom::Rect char_box(top_left, bottom_right);
        if (char_box.dimensions()[Geom::X] == 0.0 || char_box.dimensions()[Geom::Y] == 0.0)
            continue;
        Geom::Point center_of_rotation((top_left[Geom::X] + bottom_right[Geom::X]) * 0.5,
                                       top_left[Geom::Y] + _spans[span_index].line_height.ascent);
        Geom::Affine total_transform = Geom::Translate(-center_of_rotation) * Geom::Rotate(char_rotation) * Geom::Translate(center_of_rotation) * transform;
        for(int i = 0; i < 4; i ++)
            quads.push_back(char_box.corner(i) * total_transform);
    }
    return quads;
}

int main(int argc, char **argv) {
    char const *const filename = (argc >= 2
                                  ? argv[1]
                                  : "toy.svgd");
    FILE* f = fopen(filename, "r");
    if (!f) {
        perror(filename);
        return 1;
    }
    display_path = read_svgd(f);

    Geom::Rect r = display_path.bbox();
    
    display_path = display_path*Geom::translate(-r.min());
    Geom::scale sc(r.max() - r.min());
    display_path = display_path*(sc.inverse()*Geom::scale(500,500));
    
    gtk_init (&argc, &argv);

    gdk_rgb_init();

    GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

    gtk_window_set_title(GTK_WINDOW(window), "text toy");

    gtk_window_set_policy(GTK_WINDOW(window), TRUE, TRUE, TRUE);

    gtk_signal_connect(GTK_OBJECT(window),
                       "delete_event",
                       GTK_SIGNAL_FUNC(delete_event_cb),
                       NULL);

    gtk_widget_push_visual(gdk_rgb_get_visual());
    gtk_widget_push_colormap(gdk_rgb_get_cmap());
    canvas = gtk_drawing_area_new();

    gtk_signal_connect(GTK_OBJECT (canvas),
                       "expose_event",
                       GTK_SIGNAL_FUNC(expose_event),
                       0);
    gtk_widget_add_events(canvas, (GDK_BUTTON_PRESS_MASK |
                                   GDK_BUTTON_RELEASE_MASK |
                                   GDK_KEY_PRESS_MASK    |
                                   GDK_POINTER_MOTION_MASK));
    gtk_signal_connect(GTK_OBJECT (canvas),
                       "button_press_event",
                       GTK_SIGNAL_FUNC(mouse_event),
                       0);
    gtk_signal_connect(GTK_OBJECT (canvas),
                       "button_release_event",
                       GTK_SIGNAL_FUNC(mouse_release_event),
                       0);
    gtk_signal_connect(GTK_OBJECT (canvas),
                       "motion_notify_event",
                       GTK_SIGNAL_FUNC(mouse_motion_event),
                       0);
    gtk_signal_connect(GTK_OBJECT(canvas),
                       "key_press_event",
                       GTK_SIGNAL_FUNC(key_release_event),
                       0);

    gtk_widget_pop_colormap();
    gtk_widget_pop_visual();

    GtkWidget *vb = gtk_vbox_new(0, 0);


    gtk_container_add(GTK_CONTAINER(window), vb);

    gtk_box_pack_start(GTK_BOX(vb), canvas, TRUE, TRUE, 0);

    gtk_window_set_default_size(GTK_WINDOW(window), 600, 600);

    gtk_widget_show_all(window);

    dash_gc = gdk_gc_new(canvas->window);
    gint8 dash_list[] = {4, 4};
    gdk_gc_set_dashes(dash_gc, 0, dash_list, 2);
    GdkColor colour;
    colour.red = 0xffff;
    colour.green = 0xffff;
    colour.blue = 0xffff;

    plain_gc = gdk_gc_new(canvas->window);
    
    //gdk_gc_set_rgb_fg_color(dash_gc, &colour);
    gdk_rgb_find_color(gtk_widget_get_colormap(canvas), &colour);
    gdk_window_set_background(canvas->window, &colour);
    gdk_gc_set_line_attributes(dash_gc, 1, GDK_LINE_ON_OFF_DASH,
                               GDK_CAP_BUTT,GDK_JOIN_MITER);

    /* Make sure the canvas can receive key press events. */
    GTK_WIDGET_SET_FLAGS(canvas, GTK_CAN_FOCUS);
    assert(GTK_WIDGET_CAN_FOCUS(canvas));
    gtk_widget_grab_focus(canvas);
    assert(gtk_widget_is_focus(canvas));

    gtk_main();

    return 0;
//.........这里部分代码省略.........