X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;ds=sidebyside;f=cinelerra-5.1%2Fguicast%2Fvicon.C;h=1f80bc470c40799c84067557e1938ba769ff4591;hb=bd40a11178ed791d8c163877d3c28e5045148c62;hp=2bfedd9277b9a1465091361adafa7e1c757689a0;hpb=3ad39dda113124e7e1bb11a808541e6311417863;p=goodguy%2Fhistory.git

diff --git a/cinelerra-5.1/guicast/vicon.C b/cinelerra-5.1/guicast/vicon.C
index 2bfedd92..1f80bc47 100644
--- a/cinelerra-5.1/guicast/vicon.C
+++ b/cinelerra-5.1/guicast/vicon.C
@@ -41,9 +41,27 @@ add_image(VFrame *frm, int ww, int hh, int vcmdl)
 }
 
 void VIcon::
-draw_vframe(BC_WindowBase *wdw, int x, int y)
+draw_vframe(VIconThread *vt, BC_WindowBase *wdw, int x, int y)
 {
-	wdw->draw_vframe(frame(), x,y, vw,vh);
+	int sx0 = 0, sx1 = sx0 + vt->view_w;
+	int sy0 = 0, sy1 = sy0 + vt->view_h;
+	int dx0 = x, dx1 = dx0 + vw;
+	int dy0 = y, dy1 = dy0 + vh;
+	if( (x=vt->draw_x0-dx0) > 0 ) { sx0 += (x*vt->view_w)/vw;  dx0 = vt->draw_x0; }
+	if( (x=dx1-vt->draw_x1) > 0 ) { sx1 -= (x*vt->view_w)/vw;  dx1 = vt->draw_x1; }
+	if( (y=vt->draw_y0-dy0) > 0 ) { sy0 += (y*vt->view_h)/vh;  dy0 = vt->draw_y0; }
+	if( (y=dy1-vt->draw_y1) > 0 ) { sy1 -= (y*vt->view_h)/vh;  dy1 = vt->draw_y1; }
+	int sw = sx1 - sx0, sh = sy1 - sy0;
+	int dw = dx1 - dx0, dh = dy1 - dy0;
+	if( dw > 0 && dh > 0 && sw > 0 && sh > 0 )
+		wdw->draw_vframe(frame(), dx0,dy0, dw,dh, sx0,sy0, sw,sh);
+}
+
+void VIconThread::
+set_drawing_area(int x0, int y0, int x1, int y1)
+{
+	draw_x0 = x0;  draw_y0 = y0;
+	draw_x1 = x1;  draw_y1 = y1;
 }
 
 VIcon *VIconThread::low_vicon()
@@ -78,6 +96,8 @@ VIconThread(BC_WindowBase *wdw, int vw, int vh)
 	this->view_win = 0;  this->vicon = 0;
 	this->view_w = vw;   this->view_h = vh;
 	this->viewing = 0;
+	this->draw_x0 = 0;   this->draw_x1 = wdw->get_w();
+	this->draw_y0 = 0;   this->draw_y1 = wdw->get_h();
 	draw_lock = new Condition(0, "VIconThread::draw_lock", 1);
 	timer = new Timer();
 	this->refresh_rate = VICON_RATE;
@@ -139,16 +159,10 @@ bool VIconThread::
 visible(VIcon *vicon, int x, int y)
 {
 	if( vicon->hidden ) return false;
-	int y0 = 0;
-	int my = y + vicon->vh;
-	if( my <= y0 ) return false;
-	int y1 = y0 + wdw->get_h();
-	if( y >= y1 ) return false;
-	int x0 = 0;
-	int mx = x + vicon->vw;
-	if( mx <= x0 ) return false;
-	int x1 = x0 + wdw->get_w();
-	if( x >= x1 ) return false;
+	if( y+vicon->vh <= draw_y0 ) return false;
+	if( y >= draw_y1 ) return false;
+	if( x+vicon->vw <= draw_x0 ) return false;
+	if( x >= draw_x1 ) return false;
 	return true;
 }
 
@@ -263,7 +277,7 @@ draw(VIcon *vicon)
 	if( !draw_img && !draw_win ) return 0;
 	if( !vicon->frame() ) return 0;
 	if( draw_img ) {
-		vicon->draw_vframe(wdw, x, y);
+		vicon->draw_vframe(this, wdw, x, y);
 		img_dirty = 1;
 	}
 	if( draw_win ) {