Dopesheet: Added "Moving Hold" as a keyframe type

Currently "long keyframes" are only useful for indicating where stationary
holds occur. If however you try to create a "moving hold" (where the values
are slightly different, but in terms of overall effect, it's still a hold)
then it could get tricky to keep track of where these occur.

Now it's possible to tag such keyframes (using the keyframe types - RKEY)
as being part of a moving hold. These will not only be drawn differently
from normal keyframes, but they will also result in a "long keyframe"
being drawn between each pair of them, just like if they had been completely
stationary instead.

Currently the theming/styling of these is a bit rough. They reuse the existing
theme colours for long keyframes.

1 files changed, 24 insertions, 0 deletions

diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index a9607d93672..c8ff335f2a0 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -1473,6 +1473,30 @@ void UI_GetThemeColor3ubv(int colorid, unsigned char col[3])
 	col[2] = cp[2];
 }
 
+/* get the color, range 0.0-1.0, complete with shading offset */
+void UI_GetThemeColorShade4fv(int colorid, int offset, float col[4])
+{
+	int r, g, b, a;
+	const unsigned char *cp;
+	
+	cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
+	
+	r = offset + (int) cp[0];
+	CLAMP(r, 0, 255);
+	g = offset + (int) cp[1];
+	CLAMP(g, 0, 255);
+	b = offset + (int) cp[2];
+	CLAMP(b, 0, 255);
+	
+	a = (int) cp[3]; /* no shading offset... */
+	CLAMP(a, 0, 255);
+	
+	col[0] = ((float)r) / 255.0f;
+	col[1] = ((float)g) / 255.0f;
+	col[2] = ((float)b) / 255.0f;
+	col[3] = ((float)a) / 255.0f;
+}
+
 /* get the color, in char pointer */
 void UI_GetThemeColor4ubv(int colorid, unsigned char col[4])
 {