/*
- Copyright (C) 2011 Paul Davis
+ Copyright (C) 2011 Paul Davis
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
- This program 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
- GNU General Public License for more details.
+ This program 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
+ GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <algorithm>
#include <cmath>
+#include <iostream>
#include "gtkmm2ext/cairocell.h"
#include "gtkmm2ext/utils.h"
using std::string;
using std::map;
+using std::max;
+using std::cerr;
+using std::endl;
using namespace Gtkmm2ext;
-CairoCell::CairoCell ()
- : _visible (true)
- , _xpad (5)
+static const double cairo_font_fudge = 1.5;
+
+CairoFontDescription::CairoFontDescription (Pango::FontDescription& fd)
+{
+ _size = cairo_font_fudge * (fd.get_size() / PANGO_SCALE);
+
+ switch (fd.get_style()) {
+ case Pango::STYLE_NORMAL:
+ _slant = Cairo::FONT_SLANT_NORMAL;
+ break;
+ case Pango::STYLE_OBLIQUE:
+ _slant = Cairo::FONT_SLANT_OBLIQUE;
+ break;
+ case Pango::STYLE_ITALIC:
+ _slant = Cairo::FONT_SLANT_ITALIC;
+ break;
+ }
+
+ switch (fd.get_weight()) {
+ case Pango::WEIGHT_ULTRALIGHT:
+ _weight = Cairo::FONT_WEIGHT_NORMAL;
+ break;
+
+ case Pango::WEIGHT_LIGHT:
+ _weight = Cairo::FONT_WEIGHT_NORMAL;
+ break;
+
+ case Pango::WEIGHT_NORMAL:
+ _weight = Cairo::FONT_WEIGHT_NORMAL;
+ break;
+
+ case Pango::WEIGHT_SEMIBOLD:
+ _weight = Cairo::FONT_WEIGHT_BOLD;
+ break;
+
+ case Pango::WEIGHT_BOLD:
+ _weight = Cairo::FONT_WEIGHT_BOLD;
+ break;
+
+ case Pango::WEIGHT_ULTRABOLD:
+ _weight = Cairo::FONT_WEIGHT_BOLD;
+ break;
+
+ case Pango::WEIGHT_HEAVY:
+ _weight = Cairo::FONT_WEIGHT_BOLD;
+ break;
+
+ }
+
+ face = fd.get_family();
+}
+
+CairoCell::CairoCell (int32_t id)
+ : _id (id)
+ , _visible (true)
+ , _xpad (0)
{
- bbox.x = 0;
- bbox.y = 0;
- bbox.width = 0;
- bbox.height = 0;
+ bbox.x = 0;
+ bbox.y = 0;
+ bbox.width = 0;
+ bbox.height = 0;
}
-CairoTextCell::CairoTextCell (uint32_t wc)
- : _width_chars (wc)
+CairoTextCell::CairoTextCell (int32_t id, double wc, boost::shared_ptr<CairoFontDescription> font)
+ : CairoCell (id)
+ , _width_chars (wc)
+ , _font (font)
+ , y_offset (0)
+ , x_offset (0)
{
}
+void
+CairoTextCell::set_text (const std::string& txt)
+{
+ _text = txt;
+}
+
void
CairoTextCell::render (Cairo::RefPtr<Cairo::Context>& context)
{
- if (!_visible || _width_chars == 0) {
- return;
- }
+ if (!_visible || _width_chars == 0) {
+ return;
+ }
+
+ context->save ();
- context->move_to (bbox.x, bbox.y);
- pango_cairo_update_layout (context->cobj(), layout->gobj());
- pango_cairo_show_layout (context->cobj(), layout->gobj());
+ context->rectangle (bbox.x, bbox.y, bbox.width, bbox.height);
+ context->clip ();
+
+ _font->apply (context);
+ context->move_to (bbox.x, bbox.y + bbox.height + y_offset);
+ context->show_text (_text);
+
+ context->restore ();
}
void
-CairoTextCell::set_size (Glib::RefPtr<Pango::Context>& context, const Pango::FontDescription& font)
+CairoTextCell::set_size (Cairo::RefPtr<Cairo::Context>& context)
{
- layout = Pango::Layout::create (context);
- layout->set_font_description (font);
+ const uint32_t lim = (uint32_t) ceil (_width_chars);
+ char buf[lim+1];
+ uint32_t n;
+ double max_width = 0.0;
+ double max_height = 0.0;
+ Cairo::TextExtents ext;
+ double bsum = 0;
+
+ buf[lim] = '\0';
+
+ _font->apply (context);
+
+ for (int digit = 0; digit < 10; digit++) {
+
+ for (n = 0; n < lim; ++n) {
+ buf[n] = '0' + digit;
+ }
+
+ context->get_text_extents (buf, ext);
+
+ max_width = max (ext.width + ext.x_bearing, max_width);
+ max_height = max (ext.height, max_height);
+ bsum += ext.x_bearing;
+ }
+
+ /* add the average x-bearing for all digits as right hand side padding */
+
+ bbox.width = max_width + (bsum/10.0);
+
+ /* some fonts and some digits get their extents computed "too small", so fudge this
+ by adding 2
+ */
+ bbox.height = max_height;
+}
- Pango::FontMetrics metrics = context->get_metrics (font);
+CairoCharCell::CairoCharCell (int32_t id, char c)
+ : CairoTextCell (id, 1)
+{
+ _text = c;
+}
- bbox.width = (_width_chars * metrics.get_approximate_digit_width ()) / PANGO_SCALE;
- bbox.height = (metrics.get_ascent() + metrics.get_descent()) / PANGO_SCALE;
+void
+CairoCharCell::set_size (Cairo::RefPtr<Cairo::Context>& context)
+{
+ Cairo::TextExtents ext;
+
+ _font->apply (context);
+
+ {
+ const char* buf = "8";
+ context->get_text_extents (buf, ext);
+ /* same height as an "8" */
+ bbox.height = ext.height;
+ }
+
+ {
+ const char* buf = ":";
+ context->get_text_extents (buf, ext);
+ bbox.width = ext.width + (2.0 * ext.x_bearing);
+ /* center vertically */
+ y_offset = (ext.height - bbox.height) / 2.0;
+ }
}
-CairoCell*
-CairoEditableText::get_cell (uint32_t id)
+CairoEditableText::CairoEditableText (boost::shared_ptr<CairoFontDescription> font)
+ : editing_cell (0)
+ , _draw_bg (true)
+ , max_cell_width (0)
+ , max_cell_height (0)
+ , _corner_radius (9)
+ , _xpad (0)
+ , _ypad (0)
{
- CellMap::iterator i = cells.find (id);
- if (i == cells.end()) {
- return 0;
- }
- return i->second;
+ set_font (font);
+
+ add_events (Gdk::POINTER_MOTION_HINT_MASK | Gdk::SCROLL_MASK | Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK |
+ Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::SCROLL_MASK);
+ set_flags (Gtk::CAN_FOCUS);
+
+ set_can_default (true);
}
-CairoEditableText::CairoEditableText ()
- : editing_id (0)
- , editing_pos (0)
- , width (0)
- , max_cell_height (0)
- , height (0)
- , corner_radius (24)
- , xpad (10)
- , ypad (5)
+CairoEditableText::~CairoEditableText ()
{
- add_events (Gdk::POINTER_MOTION_HINT_MASK | Gdk::SCROLL_MASK | Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK |
- Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
- set_flags (Gtk::CAN_FOCUS);
- set_can_default (true);
- set_receives_default (true);
+ /* we don't own cells */
}
bool
-CairoEditableText::on_focus_in_event (GdkEventFocus* ev)
+CairoEditableText::on_scroll_event (GdkEventScroll* ev)
{
- return false;
+ CairoCell* cell = find_cell (ev->x, ev->y);
+
+ if (cell) {
+ return scroll (ev, cell);
+ }
+
+ return false;
}
bool
-CairoEditableText::on_focus_out_event (GdkEventFocus* ev)
+CairoEditableText::on_focus_in_event (GdkEventFocus*)
{
- if (editing_id) {
- CairoCell* cell = get_cell (editing_id);
- queue_draw_cell (cell);
- editing_id = 0;
- editing_pos = 0;
- }
-
- return false;
+ return false;
}
-void
-CairoEditableText::add_cell (uint32_t id, CairoCell* cell)
+bool
+CairoEditableText::on_focus_out_event (GdkEventFocus*)
{
- if (id > 0) {
- Glib::RefPtr<Pango::Context> context = get_pango_context ();
- cell->set_size (context, font);
-
- cells[id] = cell; /* we own it */
- }
+ if (editing_cell) {
+ queue_draw_cell (editing_cell);
+ editing_cell = 0;
+ }
+ return false;
}
void
-CairoEditableText::set_text (uint32_t id, const string& text)
+CairoEditableText::add_cell (CairoCell* cell)
{
- CellMap::iterator i = cells.find (id);
+ cells.push_back (cell);
+
+ CairoTextCell* tc = dynamic_cast<CairoTextCell*>(cell);
- if (i == cells.end()) {
- return;
- }
+ if (tc) {
+ tc->set_font (_font);
+ }
- CairoTextCell* textcell = dynamic_cast<CairoTextCell*> (i->second);
+ queue_resize ();
+}
+
+void
+CairoEditableText::clear_cells ()
+{
+ cells.clear ();
+ queue_resize ();
+}
- if (textcell) {
- set_text (textcell, text);
- }
-}
+void
+CairoEditableText::set_width_chars (CairoTextCell* cell, uint32_t wc)
+{
+ if (cell) {
+ cell->set_width_chars (wc);
+ queue_resize ();
+ }
+}
void
CairoEditableText::set_text (CairoTextCell* cell, const string& text)
{
- cell->set_text (text);
- queue_draw_cell (cell);
+ cell->set_text (text);
+ queue_draw_cell (cell);
}
bool
CairoEditableText::on_expose_event (GdkEventExpose* ev)
{
- Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
+ Glib::RefPtr<Gdk::Window> win = get_window ();
+
+ if (!win) {
+ std::cerr << "CET: no window to draw on\n";
+ return false;
+ }
+
+ Cairo::RefPtr<Cairo::Context> context = win->create_cairo_context();
- if (cells.empty()) {
- return true;
- }
+ if (cells.empty()) {
+ return true;
+ }
context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
context->clip ();
- context->set_source_rgba (bg_r, bg_g, bg_b, bg_a);
- rounded_rectangle (context, 0, 0, width, height, corner_radius);
- context->fill ();
-
- for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
-
- uint32_t id = i->first;
- CairoCell* cell = i->second;
-
- /* is cell inside the expose area?
- */
-
- if (cell->intersects (ev->area)) {
-
- if (id == editing_id) {
- context->set_source_rgba (edit_r, edit_b, edit_g, edit_a);
- } else {
- context->set_source_rgba (r, g, b, a);
- }
-
- cell->render (context);
- }
- }
- return true;
+ Gtk::Allocation alloc = get_allocation ();
+ double width = alloc.get_width();
+ double height = alloc.get_height ();
+
+ if (_draw_bg) {
+ context->set_source_rgba (bg_r, bg_g, bg_b, bg_a);
+ if (_corner_radius) {
+ rounded_rectangle (context, 0, 0, width, height, _corner_radius);
+ } else {
+ context->rectangle (0, 0, width, height);
+ }
+ context->fill ();
+ }
+
+ for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
+
+ CairoCell* cell = (*i);
+
+ /* is cell inside the expose area?
+ */
+
+ if (cell->intersects (ev->area)) {
+ if (cell == editing_cell) {
+ context->set_source_rgba (edit_r, edit_b, edit_g, edit_a);
+ } else {
+ context->set_source_rgba (r, g, b, a);
+ }
+
+ cell->render (context);
+ }
+ }
+
+ return true;
}
void
CairoEditableText::queue_draw_cell (CairoCell* cell)
{
- Glib::RefPtr<Gdk::Window> win = get_window();
+ Glib::RefPtr<Gdk::Window> win = get_window();
- if (!win) {
- return;
- }
+ if (!win) {
+ return;
+ }
- Gdk::Rectangle r;
+ Gdk::Rectangle r;
- r.set_x (cell->x());
- r.set_y (cell->y());
- r.set_width (cell->width());
- r.set_height (cell->height());
+ r.set_x (cell->x());
+ r.set_y (cell->y());
+ r.set_width (cell->width());
+ r.set_height (cell->height());
- Gdk::Region rg (r);
- win->invalidate_region (rg, true);
+ Gdk::Region rg (r);
+ win->invalidate_region (rg, true);
}
-CairoCell*
-CairoEditableText::find_cell (uint32_t x, uint32_t y, uint32_t& id)
+CairoCell*
+CairoEditableText::find_cell (uint32_t x, uint32_t y)
{
- for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
- if (i->second->covers (x, y)) {
- id = i->first;
- return i->second;
- }
- }
-
- return 0;
+ for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
+ if ((*i)->covers (x, y)) {
+ return (*i);
+ }
+ }
+
+ return 0;
}
bool
CairoEditableText::on_button_press_event (GdkEventButton* ev)
{
- uint32_t id;
- CairoCell* cell;
-
- if (editing_id) {
- cell = get_cell (editing_id);
- /* redraw the old cell */
- queue_draw_cell (cell);
- }
-
- cell = find_cell (ev->x, ev->y, id);
-
- if (!cell) {
- editing_id = 0;
- return false;
- }
-
- grab_focus ();
- editing_id = id;
- editing_pos = 0;
-
- /* redraw the new cell (maybe the same as the old - no real cost) */
- queue_draw_cell (cell);
-
- return true;
+ CairoCell* cell = find_cell (ev->x, ev->y);
+ return button_press (ev, cell);
}
bool
CairoEditableText::on_button_release_event (GdkEventButton* ev)
{
- return true;
+ CairoCell* cell = find_cell (ev->x, ev->y);
+ return button_release (ev, cell);
}
-bool
-CairoEditableText::on_key_press_event (GdkEventKey* ev)
+void
+CairoEditableText::start_editing (CairoCell* cell)
{
- if (!editing_id) {
- return true;
- }
-
- bool commit_change = false;
-
- CairoCell* cell = get_cell (editing_id);
-
- if (!cell) {
- return true;
- }
-
- CairoTextCell* text_cell = dynamic_cast<CairoTextCell*> (cell);
-
- if (!text_cell) {
- return true;
- }
-
- string txt = text_cell->get_text ();
-
- switch (ev->keyval) {
- case GDK_Tab:
- queue_draw_cell (cell);
- edit_next_cell ();
- break;
-
- case GDK_0:
- case GDK_KP_0:
- txt[editing_pos] = '0';
- commit_change = true;
- break;
- case GDK_1:
- case GDK_KP_1:
- txt[editing_pos] = '1';
- commit_change = true;
- break;
- case GDK_2:
- case GDK_KP_2:
- txt[editing_pos] = '2';
- commit_change = true;
- break;
- case GDK_3:
- case GDK_KP_3:
- txt[editing_pos] = '3';
- commit_change = true;
- break;
- case GDK_4:
- case GDK_KP_4:
- txt[editing_pos] = '4';
- commit_change = true;
- break;
- case GDK_5:
- case GDK_KP_5:
- txt[editing_pos] = '5';
- commit_change = true;
- break;
- case GDK_6:
- case GDK_KP_6:
- txt[editing_pos] = '6';
- commit_change = true;
- break;
- case GDK_7:
- case GDK_KP_7:
- txt[editing_pos] = '7';
- commit_change = true;
- break;
- case GDK_8:
- case GDK_KP_8:
- txt[editing_pos] = '8';
- commit_change = true;
- break;
- case GDK_9:
- case GDK_KP_9:
- txt[editing_pos] = '9';
- commit_change = true;
- break;
-
- case GDK_Right:
- if (editing_pos < text_cell->width_chars() - 1) {
- editing_pos++;
- }
- break;
-
- case GDK_Left:
- if (editing_pos > 0) {
- editing_pos--;
- }
- break;
-
- default:
- break;
- }
-
- if (commit_change) {
- set_text (text_cell, txt);
-
- if (++editing_pos >= text_cell->width_chars()) {
- edit_next_cell ();
- }
- }
-
-
- return true;
+ stop_editing ();
+
+ if (cell) {
+ editing_cell = cell;
+ queue_draw_cell (cell);
+ grab_focus ();
+ }
}
void
-CairoEditableText::edit_next_cell ()
+CairoEditableText::stop_editing ()
{
- CairoCell* next;
- CairoTextCell* next_text;
- uint32_t next_id = editing_id + 1;
-
- while (true) {
- next = get_cell (next_id);
-
- if (!next || !next->visible() || (next_text = dynamic_cast<CairoTextCell*> (next)) != 0) {
- break;
- }
-
- next_id += 1;
- }
-
- if (next) {
- editing_id = next_id;
- editing_pos = 0;
- queue_draw_cell (next_text);
- } else {
- editing_id = 0;
- editing_pos = 0;
- }
+ if (editing_cell) {
+ queue_draw_cell (editing_cell);
+ editing_cell = 0;
+ }
}
-bool
-CairoEditableText::on_key_release_event (GdkEventKey* ev)
+void
+CairoEditableText::set_cell_sizes ()
{
- return true;
+ Glib::RefPtr<Gdk::Window> win = get_window();
+
+ if (!win) {
+ return;
+ }
+
+ Cairo::RefPtr<Cairo::Context> context = win->create_cairo_context();
+
+ if (!context) {
+ return;
+ }
+
+ for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
+ (*i)->set_size (context);
+ }
}
void
CairoEditableText::on_size_request (GtkRequisition* req)
{
- double x = 0;
+ set_cell_sizes ();
+
+ max_cell_width = 0;
+ max_cell_height = 0;
+
+ for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
+ max_cell_width += (*i)->width();
+ max_cell_height = std::max ((double) (*i)->height(), max_cell_height);
+ }
+
+ req->width = max_cell_width;
+ req->height = max_cell_height;
+}
- max_cell_height = 0;
+void
+CairoEditableText::on_size_allocate (Gtk::Allocation& alloc)
+{
+ Misc::on_size_allocate (alloc);
+
+ /* position each cell so that its centered in the allocated space
+ */
- x = xpad;
+ double x = (alloc.get_width() - max_cell_width)/2.0;
+ double y = (alloc.get_height() - max_cell_height)/2.0;
- for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
- CairoCell* cell = i->second;
+ CellMap::iterator i = cells.begin();
- if (cell->visible()) {
- cell->set_position (x, ypad);
- }
+ while (i != cells.end()) {
+ CairoCell* cell = (*i);
- x += cell->width() + cell->xpad();
- max_cell_height = std::max ((double) cell->height(), max_cell_height);
- }
+ cell->set_position (x, y);
+ x += cell->width ();
- x += xpad;
-
- req->width = x;
- req->height = max_cell_height + (ypad * 2);
+ if (++i != cells.end()) {
+ /* only add cell padding intra-cellularly */
+ x += cell->xpad();
+ } else {
+ break;
+ }
+ }
}
void
-CairoEditableText::on_size_allocate (Gtk::Allocation& alloc)
+CairoEditableText::set_font (Pango::FontDescription& fd)
{
- Misc::on_size_allocate (alloc);
+ boost::shared_ptr<CairoFontDescription> cd (new CairoFontDescription (fd));
+ set_font (cd);
+}
+
+void
+CairoEditableText::set_font (boost::shared_ptr<CairoFontDescription> fd)
+{
+ for (CellMap::iterator i = cells.begin(); i != cells.end(); ++i) {
+ CairoTextCell* tc = dynamic_cast<CairoTextCell*>(*i);
+ if (tc && (!tc->font() || tc->font() == _font)) {
+ tc->set_font (fd);
+ }
+ }
+
+ _font = fd;
- width = alloc.get_width();
- height = alloc.get_height();
+ queue_resize ();
+ queue_draw ();
}
+
projects / ardour.git / blobdiff