diff options
Diffstat (limited to 'src/GipfelWidget.cxx')
| -rw-r--r-- | src/GipfelWidget.cxx | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/GipfelWidget.cxx b/src/GipfelWidget.cxx index 0c4ef08..c4fe032 100644 --- a/src/GipfelWidget.cxx +++ b/src/GipfelWidget.cxx @@ -147,6 +147,11 @@ GipfelWidget::load_image(char *file) { return 0; } +const char * +GipfelWidget::get_image_filename() { + return img_file; +} + int GipfelWidget::save_image(char *file) { char * args[32]; @@ -714,6 +719,7 @@ GipfelWidget::set_track_width(double w) { redraw(); } + int GipfelWidget::handle(int event) { int mark_x, mark_y; @@ -743,3 +749,72 @@ GipfelWidget::handle(int event) { } return 0; } + +int +GipfelWidget::get_pixel(double a_view, double a_nick, + char *r, char *g, char *b) { + double px, py; + + + if (img == NULL) { + return 1; + } + + if (pan->get_coordinates(a_view, a_nick, &px, &py) != 0) { + return 1; + } + + return get_pixel_nearest(img, px + ((double) img->w()) / 2.0, + py + ((double) img->h()) / 2.0, r, g, b); +} + +int +GipfelWidget::get_pixel_nearest(Fl_Image *img, double x, double y, + char *r, char *g, char *b) { + if (isnan(x) || isnan(y)) { + return 1; + } else { + return get_pixel(img, (int) rint(x), (int) rint(y), r, g, b); + } +} + + +int +GipfelWidget::get_pixel(Fl_Image *img, int x, int y, + char *r, char *g, char *b) { + if ( img->d() == 0 ) { + return 1; + } + + if (x < 0 || x >=img->w() || y < 0 || y >= img->h()) { + return 1; + } + long index = (y * img->w() * img->d()) + (x * img->d()); // X/Y -> buf index + switch ( img->count() ) { + case 1: { // bitmap + const char *buf = img->data()[0]; + switch ( img->d() ) { + case 1: { // 8bit + *r = *g = *b = *(buf+index); + break; + } + case 3: // 24bit + *r = *(buf+index+0); + *g = *(buf+index+1); + *b = *(buf+index+2); + break; + default: // ?? + printf("Not supported: chans=%d\n", img->d()); + return 1; + } + break; + } + default: // ?? pixmap, bit vals + printf("Not supported: count=%d\n", img->count()); + return 1; + } + + return 0; + +} + |