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[GRASS][FEATURE] raster import via browser drag and drop
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,177 @@ | ||
| /*************************************************************************** | ||
| qgis.r.in.cpp | ||
| --------------------- | ||
| begin : May 2015 | ||
| copyright : (C) 2015 by Radim Blazek | ||
| email : radim dot blazek at gmail dot com | ||
| *************************************************************************** | ||
| * * | ||
| * 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
||
| extern "C" | ||
| { | ||
| #include <stdlib.h> | ||
| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <math.h> | ||
| #include <assert.h> | ||
| #ifdef WIN32 | ||
| #include <fcntl.h> | ||
| #include <io.h> | ||
| #endif | ||
| #include <grass/version.h> | ||
| #include <grass/gis.h> | ||
| #include <grass/raster.h> | ||
| #include <grass/display.h> | ||
|
|
||
| #ifdef _MSC_VER | ||
| #include <float.h> | ||
| #endif | ||
| } | ||
|
|
||
| #include <QByteArray> | ||
| #include <QDataStream> | ||
| #include <QFile> | ||
| #include <QIODevice> | ||
|
|
||
| #include "qgsrectangle.h" | ||
| #include "qgsrasterblock.h" | ||
| #include "qgsgrass.h" | ||
|
|
||
| //#ifdef _MSC_VER | ||
| //#define INFINITY (DBL_MAX+DBL_MAX) | ||
| //#define NAN (INFINITY-INFINITY) | ||
| //#endif | ||
|
|
||
| #if GRASS_VERSION_MAJOR >= 7 | ||
| #define G_allocate_raster_buf Rast_allocate_buf | ||
| #define G_close_cell Rast_close | ||
| #define G_get_raster_map_type Rast_get_map_type | ||
| #define G_get_raster_row Rast_get_row | ||
| #define G_is_null_value Rast_is_null_value | ||
| #define G_open_raster_new Rast_open_new | ||
| #define G_short_history Rast_short_history | ||
| #define G_command_history Rast_command_history | ||
| #define G_write_history Rast_write_history | ||
| #define G_set_raster_value_c Rast_set_c_value | ||
| #define G_set_raster_value_f Rast_set_f_value | ||
| #define G_set_raster_value_d Rast_set_d_value | ||
| #define G_put_raster_row Rast_put_row | ||
| #define G_raster_size Rast_cell_size | ||
| #endif | ||
|
|
||
| int main( int argc, char **argv ) | ||
| { | ||
| char *name; | ||
| struct GModule *module; | ||
| struct Option *map; | ||
| struct Cell_head window; | ||
| int cf; | ||
|
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| G_gisinit( argv[0] ); | ||
|
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| module = G_define_module(); | ||
| module->description = ( "Output raster map layers in a format suitable for display in QGIS" ); | ||
|
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| map = G_define_standard_option( G_OPT_R_OUTPUT ); | ||
|
|
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| if ( G_parser( argc, argv ) ) | ||
| exit( EXIT_FAILURE ); | ||
|
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| name = map->answer; | ||
|
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| QFile stdinFile; | ||
| stdinFile.open(0, QIODevice::ReadOnly); | ||
|
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| QDataStream stdinStream(&stdinFile); | ||
|
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| QgsRectangle extent; | ||
| qint32 rows, cols; | ||
| stdinStream >> extent >> cols >> rows; | ||
|
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| //G_fatal_error("i = %d", i); | ||
| //G_fatal_error( extent.toString().toAscii().data() ); | ||
|
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| QString err = QgsGrass::setRegion( &window, extent, rows, cols); | ||
| if ( !err.isEmpty() ) | ||
| { | ||
| G_fatal_error("Cannot set region: %s", err.toUtf8().data()); | ||
| } | ||
|
|
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| G_set_window( &window ); | ||
|
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| QGis::DataType qgis_type; | ||
| qint32 type; | ||
| //stdinStream >> grass_type; | ||
| stdinStream >>type; | ||
| qgis_type = (QGis::DataType)type; | ||
|
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| RASTER_MAP_TYPE grass_type; | ||
| switch ( qgis_type ) { | ||
| case QGis::Int32: | ||
| grass_type = CELL_TYPE; | ||
| break; | ||
| case QGis::Float32: | ||
| grass_type = FCELL_TYPE; | ||
| break; | ||
| case QGis::Float64: | ||
| grass_type = DCELL_TYPE; | ||
| break; | ||
| default: | ||
| G_fatal_error("QGIS data type %d not supported", qgis_type); | ||
| } | ||
|
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| cf = G_open_raster_new(name, grass_type); | ||
| if (cf < 0) | ||
| { | ||
| G_fatal_error( "Unable to create raster map <%s>", name); | ||
| } | ||
|
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| void *buf = G_allocate_raster_buf(grass_type); | ||
|
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| int expectedSize = cols * QgsRasterBlock::typeSize( qgis_type ); | ||
| QByteArray byteArray; | ||
| for ( int row = 0; row < rows; row++ ) { | ||
| stdinStream >> byteArray; | ||
| if ( byteArray.size() != expectedSize ) { | ||
| G_fatal_error("Wrong byte array size, expected %d bytes, got %d", expectedSize, byteArray.size()); | ||
| } | ||
|
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| qint32 *cell; | ||
| float *fcell; | ||
| double *dcell; | ||
| if ( grass_type == CELL_TYPE ) | ||
| cell = (qint32*) byteArray.data(); | ||
| else if ( grass_type == FCELL_TYPE ) | ||
| fcell = (float*) byteArray.data(); | ||
| else if ( grass_type == DCELL_TYPE ) | ||
| dcell = (double*) byteArray.data(); | ||
|
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| void *ptr = buf; | ||
| for ( int col = 0; col < cols; col++ ) | ||
| { | ||
| if ( grass_type == CELL_TYPE ) | ||
| G_set_raster_value_c(ptr, (CELL)cell[col], grass_type); | ||
| else if ( grass_type == FCELL_TYPE ) | ||
| G_set_raster_value_f(ptr, (FCELL)fcell[col], grass_type); | ||
| else if ( grass_type == DCELL_TYPE ) | ||
| G_set_raster_value_d(ptr, (DCELL)dcell[col], grass_type); | ||
|
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| ptr = G_incr_void_ptr( ptr, G_raster_size(grass_type) ); | ||
| } | ||
| G_put_raster_row(cf, buf, grass_type); | ||
| } | ||
|
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| G_close_cell(cf); | ||
| struct History history; | ||
| G_short_history(name, "raster", &history); | ||
| G_command_history(&history); | ||
| G_write_history(name, &history); | ||
|
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||
| exit( EXIT_SUCCESS ); | ||
| } |
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