Add full-page color tinting option and key binding to X11 viewer.

win32 supports tinting, but cannot change the color from the default.

3 files changed, 28 insertions, 1 deletions

diff --git a/platform/x11/pdfapp.c b/platform/x11/pdfapp.c
index 00f085a4..4f05a496 100644
--- a/platform/x11/pdfapp.c
+++ b/platform/x11/pdfapp.c
@@ -122,6 +122,9 @@ void pdfapp_init(fz_context *ctx, pdfapp_t *app)
 #else
 	app->colorspace = fz_device_rgb(ctx);
 #endif
+	app->tint_r = 255;
+	app->tint_g = 250;
+	app->tint_b = 240;
 }
 
 void pdfapp_invert(pdfapp_t *app, const fz_rect *rect)
@@ -820,6 +823,8 @@ static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repai
 		}
 		if (app->invert)
 			fz_invert_pixmap(app->ctx, app->image);
+		if (app->tint)
+			fz_tint_pixmap(app->ctx, app->image, app->tint_r, app->tint_g, app->tint_b);
 	}
 
 	if (transition)
@@ -1116,6 +1121,11 @@ void pdfapp_onkey(pdfapp_t *app, int c)
 		pdfapp_showpage(app, 0, 1, 1, 0, 0);
 		break;
 
+	case 'C':
+		app->tint ^= 1;
+		pdfapp_showpage(app, 0, 1, 1, 0, 0);
+		break;
+
 	case 'c':
 		app->grayscale ^= 1;
 		pdfapp_showpage(app, 0, 1, 1, 0, 0);
diff --git a/platform/x11/pdfapp.h b/platform/x11/pdfapp.h
index b2ff78da..81211181 100644
--- a/platform/x11/pdfapp.h
+++ b/platform/x11/pdfapp.h
@@ -64,6 +64,7 @@ struct pdfapp_s
 	int grayscale;
 	fz_colorspace *colorspace;
 	int invert;
+	int tint, tint_r, tint_g, tint_b;
 
 	/* presentation mode */
 	int presentation_mode;
diff --git a/platform/x11/x11_main.c b/platform/x11/x11_main.c
index d3f3d368..908850eb 100644
--- a/platform/x11/x11_main.c
+++ b/platform/x11/x11_main.c
@@ -791,6 +791,7 @@ static void usage(void)
 	fprintf(stderr, "\t-b -\tset anti-aliasing quality in bits (0=off, 8=best)\n");
 	fprintf(stderr, "\t-p -\tpassword\n");
 	fprintf(stderr, "\t-r -\tresolution\n");
+	fprintf(stderr, "\t-C -\tRRGGBB (tint color in hexadecimal syntax)\n");
 	exit(1);
 }
 
@@ -811,6 +812,7 @@ int main(int argc, char **argv)
 	struct timeval now;
 	struct timeval *timeout;
 	struct timeval tmo_advance_delay;
+	int tint, tint_r, tint_g, tint_b;
 
 	ctx = fz_new_context(NULL, NULL, FZ_STORE_DEFAULT);
 	if (!ctx)
@@ -819,10 +821,17 @@ int main(int argc, char **argv)
 		exit(1);
 	}
 
-	while ((c = fz_getopt(argc, argv, "p:r:b:")) != -1)
+	while ((c = fz_getopt(argc, argv, "p:r:b:C:")) != -1)
 	{
 		switch (c)
 		{
+		case 'C':
+			c = strtol(fz_optarg, NULL, 16);
+			tint = 1;
+			tint_r = (c >> 16) & 255;
+			tint_g = (c >> 8) & 255;
+			tint_b = (c) & 255;
+			break;
 		case 'p': password = fz_optarg; break;
 		case 'r': resolution = atoi(fz_optarg); break;
 		case 'b': fz_set_aa_level(ctx, atoi(fz_optarg)); break;
@@ -839,6 +848,13 @@ int main(int argc, char **argv)
 		pageno = atoi(argv[fz_optind++]);
 
 	pdfapp_init(ctx, &gapp);
+	if (tint)
+	{
+		gapp.tint = tint;
+		gapp.tint_r = tint_r;
+		gapp.tint_g = tint_g;
+		gapp.tint_b = tint_b;
+	}
 
 	winopen();