WebSVN – HelenOS-historic – Diff – //uspace/trunk/fb/fb.c

 #include "fb.h"
 #include "main.h"
 #include "../console/screenbuffer.h"
 #include "ppm.h"
+#include "pointer.xbm"
+#include "pointer_mask.xbm"
 #define DEFAULT_BGCOLOR                0xf0f0f0
 #define DEFAULT_FGCOLOR                0x0
 /***************************************************************/
 /* Pixel specific fuctions */
             break;
+    }
     if (i == MAX_VIEWPORTS)
         return ELIMIT;
-    if (width ==0 || height == 0 ||
-        x+width > screen.xres || y+height > screen.yres)
-        return EINVAL;
-    if (width < FONT_SCANLINES || height < COL_WIDTH)
-        return EINVAL;
     viewports[i].x = x;
     viewports[i].y = y;
     viewports[i].width = width;
     viewports[i].height = height;
     if (handled)
         ipc_answer_fast(callid, retval, 0, 0);
     return handled;
+}
-/** Save viewport to pixmap */
-static int save_vp_to_pixmap(int vp)
+static void copy_vp_to_pixmap(viewport_t *vport, pixmap_t *pmap)
+{
-    int pm;
-    pixmap_t *pmap;
-    viewport_t *vport = &viewports[vp];
     int x,y;
     int rowsize;
     int tmp;
+    int width = vport->width;
+    int height = vport->height;
+    if (width + vport->x > screen.xres)
+        width = screen.xres - vport->x;
+    if (height + vport->y  > screen.yres)
+        height = screen.yres - vport->y;
+    rowsize = width * screen.pixelbytes;
+    for (y=0;y < height; y++) {
+        tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
+        memcpy(pmap->data + rowsize*y, screen.fbaddress + tmp, rowsize);
+    }
+}
+/** Save viewport to pixmap */
+static int save_vp_to_pixmap(viewport_t *vport)
+{
+    int pm;
+    pixmap_t *pmap;
     pm = find_free_pixmap();
     if (pm == -1)
         return ELIMIT;
     if (!pmap->data)
         return ENOMEM;
     pmap->width = vport->width;
     pmap->height = vport->height;
+    copy_vp_to_pixmap(vport, pmap);
-    rowsize = vport->width * screen.pixelbytes;
-    for (y=0;y < vport->height; y++) {
-        tmp = (vport->y + y) * screen.scanline + vport->x * screen.pixelbytes;
-        memcpy(pmap->data + rowsize*y, screen.fbaddress + tmp, rowsize);
-    }
     return pm;
+}
 /** Draw pixmap on screen
+ *
     pixmap_t *pmap = &pixmaps[pm];
     viewport_t *vport = &viewports[vp];
     int x,y;
     int tmp, srcrowsize;
     int realwidth, realheight, realrowsize;
+    int width = vport->width;
+    int height = vport->height;
+    if (width + vport->x > screen.xres)
+        width = screen.xres - vport->x;
+    if (height + vport->y > screen.yres)
+        height = screen.yres - vport->y;
     if (!pmap->data)
         return EINVAL;
-    realwidth = pmap->width <= vport->width ? pmap->width : vport->width;
+    realwidth = pmap->width <= width ? pmap->width : width;
-    realheight = pmap->height <= vport->height ? pmap->height : vport->height;
+    realheight = pmap->height <= height ? pmap->height : height;
     srcrowsize = vport->width * screen.pixelbytes;
     realrowsize = realwidth * screen.pixelbytes;
     for (y=0; y < realheight; y++) {
         draw_pixmap(animations[i].vp, animations[i].pixmaps[animations[i].pos]);
         animations[i].pos = (animations[i].pos+1) % animations[i].animlen;
+    }
+}
+static int pointer_x, pointer_y;
+static int pointer_shown;
+static int pointer_vport = -1;
+static int pointer_pixmap = -1;
+static void mouse_show(void)
+{
+    int i,j;
+    int visibility;
+    int color;
+    int bytepos;
+    /* Save image under the cursor */
+    if (pointer_vport == -1) {
+        pointer_vport = viewport_create(pointer_x, pointer_y, pointer_width, pointer_height);
+        if (pointer_vport < 0)
+            return;
+    } else {
+        viewports[pointer_vport].x = pointer_x;
+        viewports[pointer_vport].y = pointer_y;
+    }
+    if (pointer_pixmap == -1)
+        pointer_pixmap = save_vp_to_pixmap(&viewports[pointer_vport]);
+    else
+        copy_vp_to_pixmap(&viewports[pointer_vport], &pixmaps[pointer_pixmap]);
+    /* Draw cursor */
+    for (i=0; i < pointer_height; i++)
+        for (j=0;j < pointer_width; j++) {
+            bytepos = i*((pointer_width-1)/8+1) + j/8;
+            visibility = pointer_mask_bits[bytepos] & (1 << (j % 8));
+            if (visibility) {
+                color = pointer_bits[bytepos] & (1 << (j % 8)) ? 0 : 0xffffff;
+                if (pointer_x+j < screen.xres && pointer_y+i < screen.yres)
+                    putpixel(&viewports[0], pointer_x+j, pointer_y+i, color);
+            }
+        }
+    pointer_shown = 1;
+}
+static void mouse_hide(void)
+{
+    /* Restore image under the cursor */
+    if (pointer_shown) {
+        draw_pixmap(pointer_vport, pointer_pixmap);
+        pointer_shown = 0;
+    }
+}
+static void mouse_move(unsigned int x, unsigned int y)
+{
+    mouse_hide();
+    pointer_x = x;
+    pointer_y = y;
+    mouse_show();
+}
 static int anim_handle(ipc_callid_t callid, ipc_call_t *call, int vp)
+{
     int handled = 1;
     int retval = 0;
     int i,nvp;
         if (nvp == -1)
             nvp = vp;
         if (nvp < 0 || nvp >= MAX_VIEWPORTS || !viewports[nvp].initialized)
             retval = EINVAL;
         else
-            retval = save_vp_to_pixmap(nvp);
+            retval = save_vp_to_pixmap(&viewports[nvp]);
         break;
     case FB_DROP_PIXMAP:
         i = IPC_GET_ARG1(*call);
         if (i >= MAX_PIXMAPS) {
             retval = EINVAL;
             break;
         case FB_GET_RESOLUTION:
             ipc_answer_fast(callid, 0, screen.xres,screen.yres);
             continue;
         case FB_POINTER_MOVE:
-            putpixel(&viewports[0], IPC_GET_ARG1(call), IPC_GET_ARG2(call),
+            mouse_move(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
-xd0a080);
             break;
         default:
             retval = ENOENT;
+        }
         ipc_answer_fast(callid,retval,0,0);

Subversion Repositories HelenOS-historic

(root)//uspace/trunk/fb/fb.c – Rev 1709 → 1711