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authorJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-22 14:05:41 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-22 14:05:41 +0200
commitb55285a77da0e0b829e4ce8d7e09debaabc68e15 (patch)
treef622559ef65bbdd3e1c5bdb06098a8f89eec0563 /app/wlib/mswlib/backgnd.c
parentd3897ce090dbeb220ed2c782f095597e417cf3cc (diff)
parentd1ae75703e1ed81d65ea16946dcdb77e7a13adc9 (diff)
Merge branch 'feature/upstream' into develop
Diffstat (limited to 'app/wlib/mswlib/backgnd.c')
-rw-r--r--app/wlib/mswlib/backgnd.c220
1 files changed, 220 insertions, 0 deletions
diff --git a/app/wlib/mswlib/backgnd.c b/app/wlib/mswlib/backgnd.c
new file mode 100644
index 0000000..d35f19a
--- /dev/null
+++ b/app/wlib/mswlib/backgnd.c
@@ -0,0 +1,220 @@
+/** \file backgnd.c
+* Layout background image
+*/
+
+/* XTrkCad - Model Railroad CAD
+* Copyright (C) 2018 Martin Fischer
+*
+* 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.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include <windows.h>
+
+#include <FreeImage.h>
+#include "i18n.h"
+#include "mswint.h"
+
+static char *lastErrorMessage; /**< store last message from FreeImage */
+#define ERRORPUNCTUATION " : "
+
+/**
+ * FreeImage error handler
+ * \param fif Format / Plugin responsible for the error
+ * \param message Error message
+ */
+
+static void
+HandleFreeImageError(FREE_IMAGE_FORMAT fif, const char *message)
+{
+ unsigned totalLength = strlen(message) + 1;
+
+ if (fif != FIF_UNKNOWN) {
+ totalLength += strlen(FreeImage_GetFormatFromFIF(fif)) + strlen(ERRORPUNCTUATION);
+ }
+
+ lastErrorMessage = malloc(totalLength);
+
+ if (fif != FIF_UNKNOWN) {
+ sprintf(lastErrorMessage,
+ "%s" ERRORPUNCTUATION "%s",
+ FreeImage_GetFormatFromFIF(fif),
+ message);
+ } else {
+ strcpy(lastErrorMessage, message);
+ }
+}
+
+/**
+* Load the background image
+* \param bd drawing context
+* \param path filename for image file, if NULL the existing background will be removed
+* \param error returned error message
+* \return -1 unsupported or invalid file, 0 success, 1 background removed
+*/
+
+int
+wDrawSetBackground(wDraw_p bd, char * path, char ** error)
+{
+ FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
+
+ FreeImage_SetOutputMessage(HandleFreeImageError);
+
+ if (lastErrorMessage) {
+ free(lastErrorMessage);
+ lastErrorMessage = NULL;
+ }
+
+ if (path) {
+ // check the file signature and deduce its format
+ // (the second argument is currently not used by FreeImage)
+ fif = FreeImage_GetFileType(path, 0);
+
+ if (fif == FIF_UNKNOWN) {
+ // no signature ?
+ // try to guess the file format from the file extension
+ fif = FreeImage_GetFIFFromFilename(path);
+ }
+
+ // check that the plugin has reading capabilities ...
+ if ((fif != FIF_UNKNOWN) && FreeImage_FIFSupportsReading(fif)) {
+ // ok, let's load the file
+ bd->background = FreeImage_Load(fif, path, 0);
+
+ // unless a bad file format, we are done !
+ if (!bd->background) {
+ *error = lastErrorMessage;
+ return (-1);
+ } else {
+ return (0);
+ }
+ } else {
+ *error = strdup(_("Image file is invalid or cannot be read."));
+ return (-1);
+ }
+ } else {
+ if (bd->background) {
+ FreeImage_Unload(bd->background);
+ bd->background = 0;
+ }
+
+ return (1);
+ }
+}
+
+/**
+* Draw background to screen. The background will be sized and rotated before being shown. The bitmap
+* is scaled so that the width is equal to size. The height is changed proportionally.
+*
+* \param bd drawing context
+* \param pos_x, pos_y bitmap position
+* \param size desired width after scaling
+* \param angle
+* \param screen visibility of bitmap in percent
+*/
+
+void
+wDrawShowBackground(wDraw_p bd, wPos_t pos_x, wPos_t pos_y, wPos_t size,
+ wAngle_t angle, int screen)
+{
+ if (bd->background) {
+ double scale;
+ FIBITMAP *tmp;
+ FIBITMAP *rotated;
+
+ if (size == 0) {
+ scale = 1.0;
+ } else {
+ scale = (double)size / FreeImage_GetWidth(bd->background);
+ }
+
+ tmp = FreeImage_RescaleRect(bd->background,
+ (int)((double)FreeImage_GetWidth(bd->background) * scale),
+ (int)((double)FreeImage_GetHeight(bd->background) * scale),
+ 0,
+ 0,
+ FreeImage_GetWidth(bd->background),
+ FreeImage_GetHeight(bd->background),
+ FILTER_BILINEAR,
+ 0);
+ FreeImage_AdjustColors(tmp, screen, -screen, 1.0, FALSE);
+ FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(tmp);
+
+ switch (image_type) {
+ case FIT_BITMAP:
+ switch (FreeImage_GetBPP(tmp)) {
+ case 8: {
+ BYTE color = 255;
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+
+ case 24: // we could also use 'RGBTRIPLE color' here
+ case 32: {
+ RGBQUAD color = { 255, 255, 255, 0 };
+ // for 24-bit images, the first 3 bytes will be read
+ // for 32-bit images, the first 4 bytes will be read
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+ }
+
+ break;
+
+ case FIT_UINT16: {
+ WORD color = 255;
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+
+ case FIT_RGB16: // we could also use 'FIRGB16 color' here
+ case FIT_RGBA16: {
+ FIRGBA16 color = { 255, 255, 255, 0 };
+ // for RGB16 images, the first 3 WORD will be read
+ // for RGBA16 images, the first 4 WORD will be read
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+
+ case FIT_FLOAT: {
+ float color = 1.0F;
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+
+ case FIT_RGBF: // we could also use 'FIRGBF color' here
+ case FIT_RGBAF: {
+ FIRGBAF color = { 1, 1, 1, 0 };
+ // for RGBF images, the first 3 float will be read
+ // for RGBAF images, the first 4 float will be read
+ rotated = FreeImage_Rotate(tmp, angle, &color);
+ }
+ break;
+ }
+
+ SetDIBitsToDevice(bd->hDc,
+ pos_x,
+ bd->h - pos_y - FreeImage_GetHeight(rotated),
+ FreeImage_GetWidth(rotated),
+ FreeImage_GetHeight(rotated),
+ 0, 0,
+ 0,
+ FreeImage_GetHeight(rotated),
+ FreeImage_GetBits(rotated),
+ FreeImage_GetInfo(rotated),
+ DIB_RGB_COLORS);
+ FreeImage_Unload(tmp);
+ FreeImage_Unload(rotated);
+ }
+} \ No newline at end of file