]> git.tdb.fi Git - libs/gltk.git/blobdiff - source/entry.cpp
Rework how widget ownership works in Container
[libs/gltk.git] / source / entry.cpp
index 9129e1b0ebbdd90bef2b641629b271a9fe618f0b..b2c78004b233b6ad9243e781639a6756a417387e 100644 (file)
@@ -5,30 +5,21 @@
 #include "entry.h"
 #include "graphic.h"
 #include "part.h"
+#include "slider.h"
 #include "style.h"
-#include "vslider.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GLtk {
 
-Entry::Entry(const string &t):
-       text(),
-       multiline(false),
-       edit_width(10),
-       edit_height(1),
-       edit_pos(0),
-       first_row(0),
-       visible_rows(1),
-       text_part(0),
-       slider(0),
-       got_key_press(false)
+Entry::Entry(const string &t)
 {
+       input_type = INPUT_TEXT;
        set_text(t);
 }
 
-void Entry::autosize_special(const Part &part, Geometry &ageom)
+void Entry::autosize_special(const Part &part, Geometry &ageom) const
 {
        if(part.get_name()=="text")
        {
@@ -47,32 +38,70 @@ void Entry::autosize_special(const Part &part, Geometry &ageom)
                        ageom.h = max(ageom.h, line_height+margin.top+margin.bottom);
        }
        else if(part.get_name()=="slider" && multiline)
-       {
-               Geometry sgeom = part.get_geometry();
-               if(!sgeom.w || !sgeom.h)
-               {
-                       slider->autosize();
-                       if(!sgeom.w)
-                               sgeom.w = slider->get_geometry().w;
-                       if(!sgeom.h)
-                               sgeom.h = slider->get_geometry().h;
-               }
+               autosize_child(*slider, part, ageom);
+}
 
-               const Sides &margin = part.get_margin();
-               ageom.w = max(ageom.w, sgeom.w+margin.left+margin.right);
-               ageom.h = max(ageom.h, sgeom.h+margin.top+margin.bottom);
+void Entry::set_text(const string &t)
+{
+       if(t!=text.get())
+       {
+               text = t;
+               signal_text_changed.emit(text.get());
        }
+       set_edit_position(text.size());
 }
 
-void Entry::set_text(const string &t)
+void Entry::insert(size_t pos, const string &t)
 {
-       text = t;
-       edit_pos = text.size();
+       if(t.empty())
+               return;
+
+       text.insert(pos, t);
+       signal_text_changed.emit(text.get());
 
+       adjust_edit_position_for_change(pos, t.size());
        if(multiline)
                check_view_range();
 
-       rebuild();
+       mark_rebuild();
+}
+
+void Entry::erase(size_t pos, size_t len)
+{
+       if(!len)
+               return;
+
+       text.erase(pos, len);
+       signal_text_changed.emit(text.get());
+
+       adjust_edit_position_for_change(pos, -len);
+       if(multiline)
+               check_view_range();
+
+       mark_rebuild();
+}
+
+bool Entry::get_selection(size_t &start, size_t &end) const
+{
+       if(!selection_active)
+               return false;
+
+       start = selection_pos;
+       end = edit_pos;
+       if(start>end)
+               swap(start, end);
+
+       return true;
+}
+
+void Entry::translate_position(size_t pos, size_t &row, size_t &col) const
+{
+       text.offset_to_coords(pos, row, col);
+}
+
+size_t Entry::translate_position(size_t row, size_t col) const
+{
+       return text.coords_to_offset(row, col);
 }
 
 void Entry::set_edit_size(unsigned w, unsigned h)
@@ -89,11 +118,12 @@ void Entry::set_multiline(bool m)
        {
                if(!slider)
                {
-                       slider = new VSlider;
-                       add(*slider);
+                       unique_ptr<VSlider> s = make_unique<VSlider>();
+                       slider = s.get();
+                       add(move(s));
                        slider->set_step(1);
                        slider->signal_value_changed.connect(sigc::mem_fun(this, &Entry::slider_value_changed));
-                       reposition_slider();
+                       mark_rebuild();
                }
                check_view_range();
        }
@@ -102,14 +132,15 @@ void Entry::set_multiline(bool m)
 void Entry::rebuild_special(const Part &part)
 {
        if(part.get_name()=="text")
-               text.build(part, geom, first_row, part_cache);
+               text.build(part, state, geom, first_row, part_cache);
        else if(part.get_name()=="cursor")
        {
-               const Graphic *graphic = part.get_graphic(state);
+               State cursor_state = (cursor_blink ? ACTIVE : NORMAL);
+               const Graphic *graphic = part.get_graphic(state|cursor_state);
                if(!text_part || !graphic || !graphic->get_texture())
                        return;
 
-               unsigned row, col;
+               size_t row, col;
                text.offset_to_coords(edit_pos, row, col);
 
                if(row<first_row || row>=first_row+visible_rows)
@@ -118,9 +149,66 @@ void Entry::rebuild_special(const Part &part)
                Geometry rgeom = text.coords_to_geometry(*text_part, geom, first_row, row, col);
 
                GL::MeshBuilder bld(part_cache.create_mesh(part, *graphic->get_texture()));
-               bld.matrix() *= GL::Matrix::translation(rgeom.x, rgeom.y, 0);
+               bld.transform(GL::Matrix::translation(rgeom.x, rgeom.y, 0));
                graphic->build(part.get_geometry().w, part.get_geometry().h, bld);
        }
+       else if(part.get_name()=="selection")
+       {
+               if(!selection_active)
+                       return;
+
+               const Graphic *graphic = part.get_graphic(state);
+               if(!text_part || !graphic || !graphic->get_texture())
+                       return;
+
+               size_t start, end;
+               get_selection(start, end);
+
+               size_t row, col;
+               text.offset_to_coords(start, row, col);
+               size_t end_row, end_col;
+               text.offset_to_coords(end, end_row, end_col);
+
+               if(end_row<first_row || row>=first_row+visible_rows)
+                       return;
+
+               if(row<first_row)
+               {
+                       row = first_row;
+                       col = 0;
+               }
+
+               if(end_row>=first_row+visible_rows)
+               {
+                       end_row = first_row+visible_rows-1;
+                       end_col = text.get_line_length(end_row);
+               }
+
+               while(row<=end_row)
+               {
+                       size_t ec = (row==end_row ? end_col : text.get_line_length(row));
+                       if(ec>col)
+                       {
+                               Geometry rgeom = text.coords_to_geometry(*text_part, geom, first_row, row, col);
+                               Geometry egeom = text.coords_to_geometry(*text_part, geom, first_row, row, ec);
+
+                               GL::MeshBuilder bld(part_cache.create_mesh(part, *graphic->get_texture()));
+                               bld.transform(GL::Matrix::translation(rgeom.x, rgeom.y, 0));
+                               graphic->build(egeom.x-rgeom.x, part.get_geometry().h, bld);
+                       }
+
+                       ++row;
+                       col = 0;
+               }
+       }
+       else if(part.get_name()=="slider")
+       {
+               if(multiline)
+               {
+                       reposition_child(*slider, part);
+                       Widget::rebuild_special(part);
+               }
+       }
        else
                Widget::rebuild_special(part);
 }
@@ -131,73 +219,121 @@ void Entry::render_special(const Part &part, GL::Renderer &renderer) const
                slider->render(renderer);
 }
 
-void Entry::key_press(unsigned key, unsigned)
+void Entry::touch_press(int x, int y, unsigned finger)
+{
+       if(finger==0)
+               set_focus();
+       Widget::touch_press(x, y, finger);
+}
+
+bool Entry::key_press(unsigned key, unsigned mod)
 {
        got_key_press = true;
-       if(key==Input::KEY_LEFT)
+       if(key==Input::KEY_BACKSPACE)
        {
-               if(edit_pos>0)
-                       set_edit_position(edit_pos-1);
+               if(selection_active)
+                       erase_selection(true);
+               else if(edit_pos>0)
+               {
+                       size_t start_pos = text.move_offset(edit_pos, -1);
+                       erase(start_pos, edit_pos-start_pos);
+               }
        }
-       else if(key==Input::KEY_RIGHT)
+       else if(key==Input::KEY_DELETE)
        {
-               if(edit_pos<text.size())
-                       set_edit_position(edit_pos+1);
+               if(selection_active)
+                       erase_selection(true);
+               else
+               {
+                       size_t end_pos = text.move_offset(edit_pos, 1);
+                       erase(edit_pos, end_pos-edit_pos);
+               }
        }
-       else if(key==Input::KEY_DOWN && multiline)
+       else if(key==Input::KEY_ENTER && multiline)
+               insert(edit_pos, "\n");
+       else if(key==Input::KEY_END)
        {
-               unsigned row, col;
+               size_t row, col;
                text.offset_to_coords(edit_pos, row, col);
-               set_edit_position(text.coords_to_offset(row+1, col));
+               set_edit_position(text.coords_to_offset(row, text.get_line_length(row)), mod==MOD_SHIFT);
        }
-       else if(key==Input::KEY_UP && multiline)
+       else if(key==Input::KEY_HOME)
        {
-               unsigned row, col;
+               size_t row, col;
                text.offset_to_coords(edit_pos, row, col);
-               set_edit_position(row>0 ? text.coords_to_offset(row-1, col) : 0);
+               set_edit_position(text.coords_to_offset(row, 0), mod==MOD_SHIFT);
        }
-       else if(key==Input::KEY_BACKSPACE)
+       else if(key==Input::KEY_PGUP)
        {
-               if(edit_pos>0)
-               {
-                       text.erase(--edit_pos, 1);
-                       check_view_range();
-                       rebuild();
-               }
+               size_t row, col;
+               text.offset_to_coords(edit_pos, row, col);
+               set_edit_position(text.coords_to_offset((row<visible_rows ? 0 : row-visible_rows), col), mod==MOD_SHIFT);
        }
-       else if(key==Input::KEY_ENTER)
+       else if(key==Input::KEY_PGDN)
        {
-               if(multiline)
-               {
-                       text.insert(edit_pos++, "\n");
-                       check_view_range();
-                       rebuild();
-               }
-               else
-                       signal_enter.emit();
+               size_t row, col;
+               text.offset_to_coords(edit_pos, row, col);
+               set_edit_position(text.coords_to_offset(row+visible_rows, col), mod==MOD_SHIFT);
        }
+       else if(key==Input::KEY_LEFT && mod==MOD_SHIFT)
+               move_edit_position(NAV_LEFT, true);
+       else if(key==Input::KEY_RIGHT && mod==MOD_SHIFT)
+               move_edit_position(NAV_RIGHT, true);
+       else if(key==Input::KEY_UP && mod==MOD_SHIFT && multiline)
+               move_edit_position(NAV_UP, true);
+       else if(key==Input::KEY_DOWN && mod==MOD_SHIFT && multiline)
+               move_edit_position(NAV_DOWN, true);
+       else
+               return false;
+
+       return true;
 }
 
-void Entry::character(wchar_t ch)
+bool Entry::character(wchar_t ch)
 {
-       if(got_key_press && ch>=' ')
+       if(got_key_press && ch>=' ' && ch!=0x7F)
        {
-               text.insert(edit_pos, StringCodec::encode<StringCodec::Utf8>(StringCodec::ustring(1, ch)));
-               ++edit_pos;
-               rebuild();
+               if(selection_active)
+                       erase_selection(false);
+               insert(edit_pos, StringCodec::encode<StringCodec::Utf8>(StringCodec::ustring(1, ch)));
+               return true;
        }
+
+       return false;
+}
+
+void Entry::focus_in()
+{
+       cursor_blink = true;
+       Widget::focus_in();
+       check_cursor_blink();
 }
 
 void Entry::focus_out()
 {
        Widget::focus_out();
        got_key_press = false;
+       check_cursor_blink();
 }
 
-void Entry::on_geometry_change()
+bool Entry::navigate(Navigation nav)
 {
-       reposition_slider();
+       if(nav==NAV_LEFT || nav==NAV_RIGHT || ((nav==NAV_DOWN || nav==NAV_UP) && multiline))
+               move_edit_position(nav, false);
+       else
+               return false;
 
+       return true;
+}
+
+void Entry::animate(const Time::TimeDelta &)
+{
+       cursor_blink = !cursor_blink;
+       mark_rebuild();
+}
+
+void Entry::on_size_change()
+{
        if(multiline)
                check_view_range();
 }
@@ -208,44 +344,123 @@ void Entry::on_style_change()
 
        if(!style)
        {
-               text_part = 0;
+               text_part = nullptr;
                return;
        }
 
-       text_part = style->get_part("text");
-
-       reposition_slider();
+       text_part = style->find_part("text");
 
        if(multiline)
                check_view_range();
+
+       check_cursor_blink();
 }
 
-void Entry::set_edit_position(unsigned ep)
+void Entry::move_edit_position(Navigation nav, bool select)
 {
-       edit_pos = ep;
-       check_view_range();
-       rebuild();
+       if(nav==NAV_LEFT)
+               set_edit_position(text.move_offset(edit_pos, -1), select);
+       else if(nav==NAV_RIGHT)
+               set_edit_position(text.move_offset(edit_pos, 1), select);
+       else if(nav==NAV_DOWN)
+       {
+               size_t row, col;
+               text.offset_to_coords(edit_pos, row, col);
+               set_edit_position(text.coords_to_offset(row+1, col), select);
+       }
+       else if(nav==NAV_UP)
+       {
+               size_t row, col;
+               text.offset_to_coords(edit_pos, row, col);
+               set_edit_position((row>0 ? text.coords_to_offset(row-1, col) : 0), select);
+       }
+       else
+               throw invalid_argument("Entry::move_edit_position");
 }
 
-void Entry::reposition_slider()
+void Entry::adjust_edit_position_for_change(size_t pos, ptrdiff_t change)
 {
-       if(!style || !slider)
-               return;
+       size_t old_edit_pos = edit_pos;
+       size_t old_select_pos = selection_pos;
 
-       if(const Part *slider_part = style->get_part("slider"))
+       if(change>0)
        {
-               Geometry sgeom = slider_part->get_geometry();
-               if(!sgeom.w || !sgeom.h)
-               {
-                       slider->autosize();
-                       if(!sgeom.w)
-                               sgeom.w = slider->get_geometry().w;
-                       if(!sgeom.h)
-                               sgeom.h = slider->get_geometry().h;
-               }
+               if(edit_pos>=pos)
+                       edit_pos += change;
+               if(selection_active && selection_pos>=pos)
+                       selection_pos += change;
+       }
+       else if(change<0)
+       {
+               if(edit_pos>=pos)
+                       edit_pos -= min<size_t>(edit_pos-pos, -change);
+               if(selection_active && selection_pos>=pos)
+                       selection_pos -= min<size_t>(selection_pos-pos, -change);
+       }
 
-               slider_part->get_alignment().apply(sgeom, geom, slider_part->get_margin());
-               slider->set_geometry(sgeom);
+       if(edit_pos!=old_edit_pos)
+               signal_edit_position_changed.emit(edit_pos);
+       if(selection_active && (edit_pos!=old_edit_pos || selection_pos!=old_select_pos))
+       {
+               size_t start, end;
+               if(get_selection(start, end))
+                       signal_selection_changed.emit(start, end);
+       }
+}
+
+void Entry::set_edit_position(size_t ep, bool select)
+{
+       bool selection_was_active = selection_active;
+       if(select && !selection_active)
+               selection_pos = edit_pos;
+       selection_active = select;
+
+       size_t old_edit_pos = edit_pos;
+       edit_pos = min(ep, text.size());
+
+       if(edit_pos!=old_edit_pos)
+       {
+               signal_edit_position_changed.emit(edit_pos);
+               size_t start, end;
+               if(get_selection(start, end))
+                       signal_selection_changed.emit(start, end);
+               else if(selection_was_active)
+                       signal_selection_changed.emit(edit_pos, edit_pos);
+       }
+
+       if(multiline)
+               check_view_range();
+       mark_rebuild();
+}
+
+void Entry::erase_selection(bool emit_change)
+{
+       size_t start, end;
+       if(!get_selection(start, end))
+               return;
+
+       text.erase(start, end-start);
+       if(emit_change)
+               signal_text_changed.emit(text.get());
+       set_edit_position(start, false);
+}
+
+void Entry::check_cursor_blink()
+{
+       const Part *cursor_part = style->find_part("cursor");
+       bool has_blink = (cursor_part && cursor_part->get_graphic(ACTIVE|FOCUS)!=cursor_part->get_graphic(NORMAL|FOCUS));
+
+       cursor_blink = (state&FOCUS);
+       if((state&FOCUS) && style && has_blink)
+       {
+               set_animation_interval(Time::sec/2);
+               mark_rebuild();
+       }
+       else
+       {
+               if(has_blink)
+                       mark_rebuild();
+               stop_animation();
        }
 }
 
@@ -254,29 +469,52 @@ void Entry::check_view_range()
        if(!multiline || !text_part)
                return;
 
-       float font_size = style->get_font_size();
-       unsigned line_spacing = static_cast<unsigned>(font_size*6/5);
+       visible_rows = text.get_visible_lines(*text_part, geom, nullptr);
 
-       const Sides &margin = text_part->get_margin();
-       visible_rows = max((geom.h-margin.top-margin.bottom)/line_spacing, 1U);
-
-       unsigned row, col;
+       size_t row, col;
        text.offset_to_coords(edit_pos, row, col);
 
+       size_t old_first_row = first_row;
        if(first_row>row)
                first_row = row;
        else if(row>=first_row+visible_rows)
                first_row = row+1-visible_rows;
 
-       unsigned scroll = max(text.get_n_lines(), visible_rows)-visible_rows;
+       size_t scroll = max<size_t>(text.get_n_lines(), visible_rows)-visible_rows;
+       if(first_row>scroll)
+               first_row = scroll;
+
+       if(first_row!=old_first_row)
+               signal_scroll_position_changed.emit(first_row);
+
        slider->set_range(0, scroll);
+       slider->set_page_size(visible_rows);
        slider->set_value(scroll-first_row);
 }
 
 void Entry::slider_value_changed(double value)
 {
        if(text.get_n_lines()>visible_rows)
-               first_row = text.get_n_lines()-visible_rows-static_cast<unsigned>(value);
+       {
+               size_t old_first_row = first_row;
+               first_row = text.get_n_lines()-visible_rows-static_cast<size_t>(value);
+               if(first_row!=old_first_row)
+                       signal_scroll_position_changed.emit(first_row);
+               mark_rebuild();
+       }
+}
+
+
+Entry::Loader::Loader(Entry &e):
+       DataFile::DerivedObjectLoader<Entry, Widget::Loader>(e)
+{
+       add("edit_size", &Entry::edit_width, &Entry::edit_height);
+       add("multiline", &Loader::multiline);
+}
+
+void Entry::Loader::multiline(bool m)
+{
+       obj.set_multiline(m);
 }
 
 } // namespace GLtk