More fixes in object drawing:

- transparent faces in editmode don't write in zbuffer anymore (prevents
  drawing errors) but still read (so behind the subsurf faces for example)
- improved drawing 'handles' for subsurf editing
- going in editmode to Solid view, will draw extra wire always, including
  transparent faces when set
- works in all combos... http://www.blender.org/docs/ton/subsurf.html

- fixed error; padplus/padminus didnt work in buttonswindow anymore
- improved buttonswin: when dragging window edge, the buttons dont
  rescale, but stay same size

source/blender/blenkernel/intern/subsurf.c

@@ -697,7 +697,8 @@ static int hypermesh_get_nhidden(HyperMesh *hme) {
 	return count;
 }
 
-static DispList *hypermesh_to_displist(HyperMesh *hme) {
+/* flag is me->flag, for handles and 'optim' */
+static DispList *hypermesh_to_displist(HyperMesh *hme, short flag) {
 	int nverts= hypermesh_get_nverts(hme);
 	int nfaces= hypermesh_get_nfaces(hme) + hypermesh_get_nlines(hme) - hypermesh_get_nhidden(hme);
 	DispList *dl= MEM_callocN(sizeof(*dl), "dl");
@@ -720,7 +721,7 @@ static DispList *hypermesh_to_displist(HyperMesh *hme) {
 	}
 
 	/* added: handles for editmode */
-	if (hme->orig_me==NULL) {
+	if (hme->orig_me==NULL && (flag & ME_OPT_EDGES)) {
 		handles= hypermesh_get_nverts_handles(hme);
 	}
 
@@ -885,7 +886,8 @@ static DispList *hypermesh_to_displist(HyperMesh *hme) {
 	return dl;
 }
 
-static DispList *subsurf_subdivide_to_displist(HyperMesh *hme, short subdiv) {
+/* flag is me->flag, for handles and 'optim' */
+static DispList *subsurf_subdivide_to_displist(HyperMesh *hme, short subdiv, short flag) {
 	DispList *dl;
 	int i;
 
@@ -901,7 +903,7 @@ static DispList *subsurf_subdivide_to_displist(HyperMesh *hme, short subdiv) {
 		hme= tmp;
 	}
 
-	dl= hypermesh_to_displist(hme);
+	dl= hypermesh_to_displist(hme, flag);
 	hypermesh_free(hme);
 	
 	return dl;
@@ -915,7 +917,7 @@ void subsurf_make_editmesh(Object *ob) {
 		HyperMesh *hme= hypermesh_from_editmesh(G.edve.first, G.eded.first, G.edvl.first);
 
 		free_displist_by_type(&me->disp, DL_MESH);
-		BLI_addtail(&me->disp, subsurf_subdivide_to_displist(hme, me->subdiv));
+		BLI_addtail(&me->disp, subsurf_subdivide_to_displist(hme, me->subdiv, me->flag));
 		
 		dl= me->disp.first;
 		if(dl && dl->mesh) dl->mesh->flag= me->flag;
@@ -930,7 +932,7 @@ void subsurf_make_mesh(Object *ob, short subdiv) {
 		HyperMesh *hme= hypermesh_from_mesh(me, find_displist(&ob->disp, DL_VERTS));
 
 		free_displist_by_type(&me->disp, DL_MESH);
-		BLI_addtail(&me->disp, subsurf_subdivide_to_displist(hme, subdiv));
+		BLI_addtail(&me->disp, subsurf_subdivide_to_displist(hme, subdiv, me->flag));
 	}
 }
 
@@ -939,7 +941,7 @@ void subsurf_to_mesh(Object *oldob, Mesh *me) {
 	
 	if (oldme->totface) {
 		HyperMesh *hme= hypermesh_from_mesh(oldme, NULL);
-		DispList *dl= subsurf_subdivide_to_displist(hme, oldme->subdiv);
+		DispList *dl= subsurf_subdivide_to_displist(hme, oldme->subdiv, oldme->flag);
 		DispListMesh *dlm= dl->mesh;
 		MFace *mfaces;
 		int i;
@@ -980,7 +982,7 @@ DispList* subsurf_mesh_to_displist(Mesh *me, DispList *dl, short subdiv)
 	
 	hme= hypermesh_from_mesh(me, dl);
 
-	return subsurf_subdivide_to_displist(hme, subdiv);
+	return subsurf_subdivide_to_displist(hme, subdiv, me->flag);
 }
 
 void subsurf_calculate_limit_positions(Mesh *me, float (*positions_r)[3]) 

source/blender/makesdna/DNA_view2d_types.h

@@ -43,6 +43,8 @@ typedef struct View2D {
 	float minzoom, maxzoom;
 	short scroll, keeptot;
 	short keepaspect, keepzoom;
+	short oldwinx, oldwiny;
+	int pad;
 } View2D;
 
 #define V2D_KEEPZOOM	0x0001	

source/blender/src/drawipo.c

@@ -417,12 +417,23 @@ void test_view2d(View2D *v2d, int winx, int winy)
 	}
 
 	if(v2d->keepaspect) {
+		short do_x=0, do_y=0;
+		
+		/* when a window edge changes, the aspect ratio can't be used to
+		   find which is the best new 'cur' rect. thats why it stores 'old' */
+		if(winx!=v2d->oldwinx) do_x= 1;
+		if(winy!=v2d->oldwiny) do_y= 1;
+		v2d->oldwinx= winx; 
+		v2d->oldwiny= winy;
+		
 		dx= (cur->ymax-cur->ymin)/(cur->xmax-cur->xmin);
 		dy= ((float)winy)/((float)winx);
 		
-		/* dx/dy is the total aspect */
+		if(do_x==do_y) {
+			if( dy > 1.0) do_x= 1; else do_x= 0;
+		}
 
-		if( dx/dy > 1.0) {
+		if( do_x ) {
 			
 			/* portrait window: correct for x */
 			dx= cur->ymax-cur->ymin;

source/blender/src/drawobject.c

@@ -2387,7 +2387,8 @@ static void drawmeshwire(Object *ob)
 			
 			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 			glEnable(GL_BLEND);
-
+			glDepthMask(0);		// disable write in zbuffer, needed for nice transp
+			
 			evl= G.edvl.first;
 			while(evl) {
 				if(evl->v1->h==0 && evl->v2->h==0 && evl->v3->h==0) {
@@ -2431,13 +2432,18 @@ static void drawmeshwire(Object *ob)
 				evl= evl->next;
 			}
 			glDisable(GL_BLEND);
+			glDepthMask(1);		// restore write in zbuffer
 		}
 
 		if(mesh_uses_displist(me)) {
-			if(handles) BIF_ThemeColor(TH_WIRE);
-			else BIF_ThemeColorBlend(TH_WIRE, TH_BACK, 0.5);
-			
-			drawDispListwire(&me->disp);
+			/* dont draw the subsurf when solid... then this is a 'drawextra' */
+			if(handles==0 && ob->dt>OB_WIRE && G.vd->drawtype>OB_WIRE);
+			else {
+				if(handles) BIF_ThemeColor(TH_WIRE);
+				else BIF_ThemeColorBlend(TH_WIRE, TH_BACK, 0.7);
+					
+				drawDispListwire(&me->disp);
+			}
 		}
 		cpack(0x0);
 		

source/blender/src/drawview.c

@@ -458,7 +458,9 @@ static void drawgrid(void)
 
 	dx= fabs(x-(wx)*fx/fw);
 	if(dx==0) dx= fabs(y-(wy)*fy/fw);
-
+	
+	glDepthMask(0);		// disable write in zbuffer
+	
 	/* check zoom out */
 	BIF_ThemeColor(TH_GRID);
 	persp(PERSP_WIN);
@@ -539,8 +541,8 @@ static void drawgrid(void)
 
 	fdrawline(x, 0.0, x, (float)curarea->winy); 
 
+	glDepthMask(1);		// enable write in zbuffer
 	persp(PERSP_VIEW);
-	setlinestyle(0);
 }
 
 
@@ -1058,6 +1060,7 @@ void do_viewbuts(unsigned short event)
 	case B_OBJECTPANELMEDIAN:
 		if(ob) {
 			v3d_editvertex_buts(NULL, ob, 1.0);
+			makeDispList(ob);
 			allqueue(REDRAWVIEW3D, 1);
 		}
 		break;

source/blender/src/interface.c

@@ -2416,12 +2416,13 @@ static int ui_do_block(uiBlock *block, uiEvent *uevent)
 				}
 				else if(uevent->event==PADPLUSKEY || uevent->event==PADMINUS) {
 					SpaceLink *sl= curarea->spacedata.first;
-					
-					if(uevent->event==PADPLUSKEY) sl->blockscale+= 0.1;
-					else sl->blockscale-= 0.1;
-					CLAMP(sl->blockscale, 0.6, 1.0);
-					addqueue(block->winq, REDRAW, 1);
-					retval= UI_CONT;
+					if(curarea->spacetype!=SPACE_BUTS) {
+						if(uevent->event==PADPLUSKEY) sl->blockscale+= 0.1;
+						else sl->blockscale-= 0.1;
+						CLAMP(sl->blockscale, 0.6, 1.0);
+						addqueue(block->winq, REDRAW, 1);
+						retval= UI_CONT;
+					}
 				}
 			}
 		}