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https://gitlab.gnome.org/GNOME/gparted
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Simplify main window partition usage graphic code
Stop using fraction_unallocated and fraction_used member variables of the DrawingAreaVisualDisk class as intermediate storage of partition usage fractions. Instead get the figures straight from the partition class and use the new calc_usage_triple() to directly set pixels widths for the partition usage graphic.
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@ -73,9 +73,6 @@ private:
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struct visual_partition
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{
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double fraction ; //Partition size as a fraction of containing disk or extended partition size
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double fraction_used ; //Used space as a fraction of partition size
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double fraction_unallocated ; //Unallocated space as a fraction of partition size
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int x_start, length ;
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int y_start, height ;
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int x_used_start, used_length ;
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@ -94,7 +91,7 @@ private:
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visual_partition()
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{
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fraction = fraction_used = fraction_unallocated = 0.0 ;
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fraction = 0.0 ;
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x_start = length =
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y_start = height =
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x_used_start = used_length =
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@ -97,34 +97,6 @@ void DrawingAreaVisualDisk::set_static_data( const std::vector<Partition> & part
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Sector partition_length = partitions[ t ] .get_sector_length() ;
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visual_partitions .back() .fraction = partition_length / static_cast<double>( length ) ;
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if ( partitions[ t ] .type == GParted::TYPE_UNALLOCATED || partitions[ t ] .type == GParted::TYPE_EXTENDED )
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{
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//Don't calculate or draw partition used, unused or unallocated rectangles
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// to show usage. Only partition color rectangle will be drawn.
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visual_partitions .back() .fraction_unallocated = -1.0 ;
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visual_partitions .back() .fraction_used = -1.0 ;
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}
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else
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{
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//Use sum_sectors as the denominator to calculate fraction_used and
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// fraction_unallocated in case it doesn't equal partition_length.
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Sector used = partitions[ t ] .get_sectors_used() ;
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Sector unused = partitions[ t ] .get_sectors_unused() ;
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Sector unallocated = partitions[ t ] .get_sectors_unallocated() ;
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Sector sum_sectors = used + unused + unallocated ;
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if ( unallocated > 0 )
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visual_partitions .back() .fraction_unallocated =
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unallocated / static_cast<double>( sum_sectors ) ;
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else
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visual_partitions .back() .fraction_unallocated = 0.0 ;
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//Calculate fraction used from free space so any hidden overhead is counted as used
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if ( unused >= 0 )
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visual_partitions .back() .fraction_used =
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1.0 - visual_partitions .back() .fraction_unallocated
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- unused / static_cast<double>( sum_sectors ) ;
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}
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visual_partitions .back() .color = partitions[ t ] .color;
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get_colormap() ->alloc_color( visual_partitions .back() .color );
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@ -181,17 +153,28 @@ void DrawingAreaVisualDisk::calc_usage( std::vector<visual_partition> & visual_p
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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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if ( visual_partitions[ t ] .fraction_used >= 0.0 )
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{
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if ( visual_partitions[ t ] .partition .type != GParted::TYPE_UNALLOCATED &&
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visual_partitions[ t ] .partition .type != GParted::TYPE_EXTENDED )
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{
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if ( visual_partitions[ t ] .partition .sector_usage_known() )
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{
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Partition::calc_usage_triple(
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visual_partitions[ t ] .partition .get_sectors_used(),
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visual_partitions[ t ] .partition .get_sectors_unused(),
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visual_partitions[ t ] .partition .get_sectors_unallocated(),
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visual_partitions[ t ] .length - BORDER *2,
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visual_partitions[ t ] .used_length,
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visual_partitions[ t ] .unused_length,
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visual_partitions[ t ] .unallocated_length ) ;
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}
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else
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{
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//Specifically show unknown figures as unused
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visual_partitions[ t ] .used_length = 0 ;
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visual_partitions[ t ] .unused_length = visual_partitions[ t ] .length - BORDER *2 ;
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visual_partitions[ t ] .unallocated_length = 0 ;
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}
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Partition::calc_usage_triple( visual_partitions[ t ] .fraction_used,
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1.0 - visual_partitions[ t ] .fraction_used
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- visual_partitions[ t ] .fraction_unallocated,
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visual_partitions[ t ] .fraction_unallocated,
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visual_partitions[ t ] .length - BORDER *2,
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visual_partitions[ t ] .used_length,
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visual_partitions[ t ] .unused_length,
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visual_partitions[ t ] .unallocated_length ) ;
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//used
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visual_partitions[ t ] .x_used_start = visual_partitions[ t ] .x_start + BORDER ;
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