From 98bdab443adfbf4d6ecc485874806016771ddbf6 Mon Sep 17 00:00:00 2001 From: Přemysl Eric Janouch Date: Tue, 28 Dec 2021 23:10:45 +0100 Subject: Hardcode Exif orientation in thumbnails --- fiv-io.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) (limited to 'fiv-io.c') diff --git a/fiv-io.c b/fiv-io.c index 759cb4e..ee597bb 100644 --- a/fiv-io.c +++ b/fiv-io.c @@ -2627,6 +2627,61 @@ fiv_io_save(cairo_surface_t *page, cairo_surface_t *frame, FivIoProfile target, // --- Metadata ---------------------------------------------------------------- +gboolean +fiv_io_orientation_is_sideways(FivIoOrientation orientation) +{ + switch (orientation) { + case FivIoOrientation90: + case FivIoOrientationMirror90: + case FivIoOrientation270: + case FivIoOrientationMirror270: + return TRUE; + default: + return FALSE; + } +} + +cairo_matrix_t +fiv_io_orientation_matrix( + FivIoOrientation orientation, double width, double height) +{ + cairo_matrix_t matrix = {}; + cairo_matrix_init_identity(&matrix); + switch (orientation) { + case FivIoOrientation90: + cairo_matrix_rotate(&matrix, -M_PI_2); + cairo_matrix_translate(&matrix, -width, 0); + break; + case FivIoOrientation180: + cairo_matrix_scale(&matrix, -1, -1); + cairo_matrix_translate(&matrix, -width, -height); + break; + case FivIoOrientation270: + cairo_matrix_rotate(&matrix, +M_PI_2); + cairo_matrix_translate(&matrix, 0, -height); + break; + case FivIoOrientationMirror0: + cairo_matrix_scale(&matrix, -1, +1); + cairo_matrix_translate(&matrix, -width, 0); + break; + case FivIoOrientationMirror90: + cairo_matrix_rotate(&matrix, +M_PI_2); + cairo_matrix_scale(&matrix, -1, +1); + cairo_matrix_translate(&matrix, -width, -height); + break; + case FivIoOrientationMirror180: + cairo_matrix_scale(&matrix, +1, -1); + cairo_matrix_translate(&matrix, 0, -height); + break; + case FivIoOrientationMirror270: + cairo_matrix_rotate(&matrix, -M_PI_2); + cairo_matrix_scale(&matrix, -1, +1); + default: + break; + } + return matrix; +} + FivIoOrientation fiv_io_exif_orientation(const guint8 *tiff, gsize len) { -- cgit v1.2.3-70-g09d2