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https://gitlab.gnome.org/GNOME/gparted
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modern-gtk2: Use Cairo for drawing the partition visualizer (!17)
Third commit in a series to convert Gdk::GC based drawing to Cairo based drawing. This specific commit makes the transition for the graphical partition visualizer widget that is used in the main application window. Closed !17 - Gtk2 modernisation
This commit is contained in:
Luca Bacci
Mike Fleetwood
parent
7fd39932a3
commit
2fad309601
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@ -53,18 +53,18 @@ private:
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void calc_position_and_height( std::vector<visual_partition> & visual_partitions, int start, int border ) ;
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void calc_usage( std::vector<visual_partition> & visual_partitions ) ;
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void calc_text( std::vector<visual_partition> & visual_partitions ) ;
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void draw_partition( const visual_partition & vp ) ;
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void draw_partitions( const std::vector<visual_partition> & visual_partitions ) ;
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void draw_partition(const Cairo::RefPtr<Cairo::Context>& cr,
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const visual_partition& vp);
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void draw_partitions(const Cairo::RefPtr<Cairo::Context>& cr,
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const std::vector<visual_partition>& visual_partitions);
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void set_selected( const std::vector<visual_partition> & visual_partitions, int x, int y ) ;
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void set_selected( const std::vector<visual_partition> & visual_partitions, const Partition * partition_ptr );
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int spreadout_leftover_px( std::vector<visual_partition> & visual_partitions, int pixels ) ;
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void free_colors( std::vector<visual_partition> & visual_partitions ) ;
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//overridden signalhandlers
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void on_realize() ;
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bool on_expose_event( GdkEventExpose * event ) ;
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bool on_button_press_event( GdkEventButton * event ) ;
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void on_size_allocate( Gtk::Allocation & allocation ) ;
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@ -115,7 +115,6 @@ private:
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const visual_partition * selected_vp ;
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int TOT_SEP, MIN_SIZE ;
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Glib::RefPtr<Gdk::GC> gc;
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Gdk::Color color_used, color_unused, color_unallocated, color_text;
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};
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@ -21,6 +21,8 @@
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#include "PartitionVector.h"
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#include "Utils.h"
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#include <gdkmm/general.h>
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#define MAIN_BORDER 5
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#define BORDER 4
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#define SEP 4
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@ -33,19 +35,11 @@ DrawingAreaVisualDisk::DrawingAreaVisualDisk()
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{
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selected_vp = NULL ;
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//set and allocated some standard colors
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// Set some standard colors
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color_used .set( Utils::get_color( GParted::FS_USED ) );
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get_colormap() ->alloc_color( color_used ) ;
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color_unused .set( Utils::get_color( GParted::FS_UNUSED ) );
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get_colormap() ->alloc_color( color_unused ) ;
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color_unallocated .set( Utils::get_color( GParted::FS_UNALLOCATED ) );
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get_colormap() ->alloc_color( color_unallocated ) ;
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color_text .set( "black" );
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get_colormap() ->alloc_color( color_text ) ;
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add_events( Gdk::BUTTON_PRESS_MASK );
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set_size_request( -1, HEIGHT ) ;
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@ -71,7 +65,6 @@ void DrawingAreaVisualDisk::set_selected( const Partition * partition_ptr )
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void DrawingAreaVisualDisk::clear()
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{
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free_colors( visual_partitions ) ;
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visual_partitions .clear() ;
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selected_vp = NULL ;
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@ -102,7 +95,6 @@ void DrawingAreaVisualDisk::set_static_data( const PartitionVector & partitions,
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Glib::ustring color_str = Utils::get_color( partitions[t].get_filesystem_partition().filesystem );
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visual_partitions.back().color.set( color_str );
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get_colormap() ->alloc_color( visual_partitions .back() .color );
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if ( partitions[ t ] .type == GParted::TYPE_EXTENDED )
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set_static_data( partitions[t].logicals,
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@ -224,72 +216,70 @@ void DrawingAreaVisualDisk::calc_text( std::vector<visual_partition> & visual_pa
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}
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}
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void DrawingAreaVisualDisk::draw_partition( const visual_partition & vp )
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void DrawingAreaVisualDisk::draw_partition(const Cairo::RefPtr<Cairo::Context>& cr,
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const visual_partition& vp)
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{
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//partition...
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gc ->set_foreground( vp .color );
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get_window() ->draw_rectangle( gc,
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true,
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vp .x_start,
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vp .y_start,
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vp .length,
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vp .height );
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Gdk::Cairo::set_source_color(cr, vp.color);
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cr->rectangle(vp.x_start,
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vp.y_start,
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vp.length,
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vp.height);
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cr->fill();
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//used..
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if ( vp .used_length > 0 )
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{
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gc ->set_foreground( color_used );
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get_window() ->draw_rectangle( gc,
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true,
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vp .x_used_start,
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vp .y_usage_start,
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vp .used_length,
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vp .usage_height );
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Gdk::Cairo::set_source_color(cr, color_used);
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cr->rectangle(vp.x_used_start,
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vp.y_usage_start,
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vp.used_length,
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vp.usage_height);
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cr->fill();
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}
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//unused
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if ( vp .unused_length > 0 )
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{
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gc ->set_foreground( color_unused );
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get_window() ->draw_rectangle( gc,
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true,
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vp .x_unused_start,
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vp .y_usage_start,
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vp .unused_length,
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vp .usage_height );
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Gdk::Cairo::set_source_color(cr, color_unused);
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cr->rectangle(vp.x_unused_start,
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vp.y_usage_start,
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vp.unused_length,
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vp.usage_height);
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cr->fill();
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}
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//unallocated
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if ( vp .unallocated_length > 0 )
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{
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gc ->set_foreground( color_unallocated );
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get_window() ->draw_rectangle( gc,
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true,
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vp .x_unallocated_start,
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vp .y_usage_start,
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vp .unallocated_length,
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vp .usage_height );
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Gdk::Cairo::set_source_color(cr, color_unallocated);
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cr->rectangle(vp.x_unallocated_start,
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vp.y_usage_start,
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vp.unallocated_length,
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vp.usage_height);
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cr->fill();
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}
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//text
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if ( vp .x_text > 0 )
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{
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gc ->set_foreground( color_text );
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get_window() ->draw_layout( gc,
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vp .x_text,
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vp .y_text,
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vp .pango_layout ) ;
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Gdk::Cairo::set_source_color(cr, color_text);
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cr->move_to(vp.x_text, vp.y_text);
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vp.pango_layout->show_in_cairo_context(cr);
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}
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}
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void DrawingAreaVisualDisk::draw_partitions( const std::vector<visual_partition> & visual_partitions )
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void DrawingAreaVisualDisk::draw_partitions(const Cairo::RefPtr<Cairo::Context>& cr,
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const std::vector<visual_partition>& visual_partitions)
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{
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for ( unsigned int t = 0 ; t < visual_partitions .size() ; t++ )
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{
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draw_partition( visual_partitions[ t ] ) ;
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draw_partition(cr, visual_partitions[t]);
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if ( visual_partitions[ t ] .logicals .size() > 0 )
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draw_partitions( visual_partitions[ t ] .logicals ) ;
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draw_partitions(cr, visual_partitions[t].logicals);
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}
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}
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@ -324,33 +314,39 @@ void DrawingAreaVisualDisk::set_selected( const std::vector<visual_partition> &
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}
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}
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void DrawingAreaVisualDisk::on_realize()
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{
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Gtk::DrawingArea::on_realize() ;
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gc = Gdk::GC::create( get_window() );
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gc ->set_line_attributes( 2,
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Gdk::LINE_ON_OFF_DASH,
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Gdk::CAP_BUTT,
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Gdk::JOIN_MITER ) ;
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}
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bool DrawingAreaVisualDisk::on_expose_event( GdkEventExpose * event )
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{
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bool ret_val = Gtk::DrawingArea::on_expose_event( event ) ;
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draw_partitions( visual_partitions ) ;
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Glib::RefPtr<Gdk::Window> window = get_window();
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if (!window)
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return true;
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Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
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// Clip to the area indicated by the expose event so that we only redraw
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// the portion of the window that needs to be redrawn.
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cr->rectangle(event->area.x, event->area.y,
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event->area.width, event->area.height);
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cr->clip();
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cr->set_line_width(2.0);
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cr->set_line_join(Cairo::LINE_JOIN_MITER); // default
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cr->set_line_cap(Cairo::LINE_CAP_BUTT); // default
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cr->set_dash(std::vector<double>(1, 4.0), 0.0);
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draw_partitions(cr, visual_partitions);
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//selection
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if ( selected_vp )
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{
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gc ->set_foreground( color_used ) ;
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get_window() ->draw_rectangle( gc,
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false,
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selected_vp ->x_start + BORDER/2 ,
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selected_vp ->y_start + BORDER/2 ,
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selected_vp ->length - BORDER,
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selected_vp ->height - BORDER ) ;
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Gdk::Cairo::set_source_color(cr, color_used);
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cr->rectangle(selected_vp->x_start + BORDER/2,
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selected_vp->y_start + BORDER/2,
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selected_vp->length - BORDER,
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selected_vp->height - BORDER);
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cr->stroke();
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}
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return ret_val ;
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@ -441,26 +437,10 @@ int DrawingAreaVisualDisk::spreadout_leftover_px( std::vector<visual_partition>
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return pixels ;
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}
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void DrawingAreaVisualDisk::free_colors( std::vector<visual_partition> & visual_partitions )
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{
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for ( unsigned int t = 0 ; t < visual_partitions .size() ; t++ )
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{
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get_colormap() ->free_color( visual_partitions[ t ] .color ) ;
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if ( visual_partitions[ t ] .logicals .size() > 0 )
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free_colors( visual_partitions[ t ] .logicals ) ;
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}
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}
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DrawingAreaVisualDisk::~DrawingAreaVisualDisk()
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{
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clear() ;
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//free the allocated colors
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get_colormap() ->free_color( color_used ) ;
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get_colormap() ->free_color( color_unused ) ;
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get_colormap() ->free_color( color_unallocated ) ;
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get_colormap() ->free_color( color_text ) ;
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}
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} //GParted
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