Merge pull request #553 from jsorg71/libpainter

add libpainter for drawing when client does not have minimum orders

5 files changed, 580 insertions, 45 deletions

diff --git a/xrdp/Makefile.am b/xrdp/Makefile.am
index df0b1558..8e22d182 100644
--- a/xrdp/Makefile.am
+++ b/xrdp/Makefile.am
@@ -33,6 +33,12 @@ AM_CPPFLAGS += $(PIXMAN_CFLAGS)
 XRDP_EXTRA_LIBS += $(PIXMAN_LIBS)
 endif
 
+if XRDP_PAINTER
+AM_CPPFLAGS += -DXRDP_PAINTER
+AM_CPPFLAGS += -I$(top_srcdir)/libpainter/include
+XRDP_EXTRA_LIBS += $(top_srcdir)/libpainter/src/.libs/libpainter.a
+endif
+
 sbin_PROGRAMS = \
   xrdp
 
diff --git a/xrdp/xrdp_bitmap.c b/xrdp/xrdp_bitmap.c
index 053be88b..deb56a2c 100644
--- a/xrdp/xrdp_bitmap.c
+++ b/xrdp/xrdp_bitmap.c
@@ -123,6 +123,14 @@ xrdp_bitmap_create(int width, int height, int bpp,
         self->data = (char *)g_malloc(width * height * Bpp, 0);
     }
 
+#if defined(XRDP_PAINTER)
+    if (self->type == WND_TYPE_SCREEN) /* noorders */
+    {
+        LLOGLN(0, ("xrdp_bitmap_create: noorders"));
+        self->data = (char *) g_malloc(width * height * Bpp, 0);
+    }
+#endif
+
     if (self->type != WND_TYPE_BITMAP)
     {
         self->child_list = list_create();
diff --git a/xrdp/xrdp_painter.c b/xrdp/xrdp_painter.c
index f5605717..361a6a74 100644
--- a/xrdp/xrdp_painter.c
+++ b/xrdp/xrdp_painter.c
@@ -20,17 +20,152 @@
 
 #include "xrdp.h"
 
+#if defined(XRDP_PAINTER)
+#include <painter.h> /* libpainter */
+#endif
+
+#define LLOG_LEVEL 1
+#define LLOGLN(_level, _args) \
+  do \
+  { \
+    if (_level < LLOG_LEVEL) \
+    { \
+        g_write("xrdp:xrdp_painter [%10.10u]: ", g_time3()); \
+        g_writeln _args ; \
+    } \
+  } \
+  while (0)
+
+#if defined(XRDP_PAINTER)
+
+/*****************************************************************************/
+static int APP_CC
+xrdp_painter_add_dirty_rect(struct xrdp_painter *self, int x, int y,
+                            int cx, int cy, struct xrdp_rect *clip_rect)
+{
+    int x2;
+    int y2;
+    struct xrdp_rect rect;
+
+    if (clip_rect != 0)
+    {
+        x2 = x + cx;
+        y2 = y + cy;
+        x = MAX(x, clip_rect->left);
+        y = MAX(y, clip_rect->top);
+        x2 = MIN(x2, clip_rect->right);
+        y2 = MIN(y2, clip_rect->bottom);
+        cx = x2 - x;
+        cy = y2 - y;
+    }
+    if (cx < 1 || cy < 1)
+    {
+        return 0;
+    }
+    rect.left = x;
+    rect.top = y;
+    rect.right = x + cx;
+    rect.bottom = y + cy;
+    xrdp_region_add_rect(self->dirty_region, &rect);
+    LLOGLN(10, ("xrdp_painter_add_dirty_rect: x %d y %d cx %d cy %d",
+           x, y, cx, cy));
+    return 0;
+}
+
+/*****************************************************************************/
+static int
+xrdp_painter_send_dirty(struct xrdp_painter *self)
+{
+    int cx;
+    int cy;
+    int bpp;
+    int Bpp;
+    int index;
+    int jndex;
+    int error;
+    char *ldata;
+    char *src;
+    char *dst;
+    struct xrdp_rect rect;
+
+    LLOGLN(10, ("xrdp_painter_send_dirty:"));
+
+    bpp = self->wm->screen->bpp;
+    Bpp = (bpp + 7) / 8;
+    if (Bpp == 3)
+    {
+        Bpp = 4;
+    }
+
+    jndex = 0;
+    error = xrdp_region_get_rect(self->dirty_region, jndex, &rect);
+    while (error == 0)
+    {
+        cx = rect.right - rect.left;
+        cy = rect.bottom - rect.top;
+        ldata = (char *)g_malloc(cx * cy * Bpp, 0);
+        if (ldata == 0)
+        {
+            return 1;
+        }
+        src = self->wm->screen->data;
+        src += self->wm->screen->line_size * rect.top;
+        src += rect.left * Bpp;
+        dst = ldata;
+        for (index = 0; index < cy; index++)
+        {
+            g_memcpy(dst, src, cx * Bpp);
+            src += self->wm->screen->line_size;
+            dst += cx * Bpp;
+        }
+        LLOGLN(10, ("xrdp_painter_send_dirty: x %d y %d cx %d cy %d",
+               rect.left, rect.top, cx, cy));
+        libxrdp_send_bitmap(self->session, cx, cy, bpp,
+                            ldata, rect.left, rect.top, cx, cy);
+        g_free(ldata);
+
+        jndex++;
+        error = xrdp_region_get_rect(self->dirty_region, jndex, &rect);
+    }
+
+    xrdp_region_delete(self->dirty_region);
+    self->dirty_region = xrdp_region_create(self->wm);
+
+    return 0;
+}
+
+#endif
+
 /*****************************************************************************/
 struct xrdp_painter *APP_CC
 xrdp_painter_create(struct xrdp_wm *wm, struct xrdp_session *session)
 {
     struct xrdp_painter *self;
 
+    LLOGLN(10, ("xrdp_painter_create:"));
     self = (struct xrdp_painter *)g_malloc(sizeof(struct xrdp_painter), 1);
     self->wm = wm;
     self->session = session;
-    self->rop = 0xcc; /* copy will use 0xcc*/
+    self->rop = 0xcc; /* copy will use 0xcc */
     self->clip_children = 1;
+
+
+    if (self->session->client_info->no_orders_supported)
+    {
+#if defined(XRDP_PAINTER)
+        if (painter_create(&(self->painter)) != PT_ERROR_NONE)
+        {
+            self->painter = 0;
+            LLOGLN(0, ("xrdp_painter_create: painter_create failed"));
+        }
+        else
+        {
+            LLOGLN(10, ("xrdp_painter_create: painter_create success"));
+        }
+        self->dirty_region = xrdp_region_create(wm);
+#endif
+    }
+
     return self;
 }
 
@@ -38,11 +173,17 @@ xrdp_painter_create(struct xrdp_wm *wm, struct xrdp_session *session)
 void APP_CC
 xrdp_painter_delete(struct xrdp_painter *self)
 {
+    LLOGLN(10, ("xrdp_painter_delete:"));
     if (self == 0)
     {
         return;
     }
 
+#if defined(XRDP_PAINTER)
+    painter_delete(self->painter);
+    xrdp_region_delete(self->dirty_region);
+#endif
+
     g_free(self);
 }
 
@@ -54,6 +195,13 @@ wm_painter_set_target(struct xrdp_painter *self)
     int index;
     struct list *del_list;
 
+    LLOGLN(10, ("wm_painter_set_target:"));
+
+    if (self->painter != 0)
+    {
+        return 0;
+    }
+
     if (self->wm->target_surface->type == WND_TYPE_SCREEN)
     {
         if (self->wm->current_surface_index != 0xffff)
@@ -97,11 +245,19 @@ wm_painter_set_target(struct xrdp_painter *self)
 int APP_CC
 xrdp_painter_begin_update(struct xrdp_painter *self)
 {
+    LLOGLN(10, ("xrdp_painter_begin_update:"));
     if (self == 0)
     {
         return 0;
     }
 
+    self->begin_end_level++;
+
+    if (self->painter != 0)
+    {
+        return 0;
+    }
+
     libxrdp_orders_init(self->session);
     wm_painter_set_target(self);
     return 0;
@@ -111,11 +267,25 @@ xrdp_painter_begin_update(struct xrdp_painter *self)
 int APP_CC
 xrdp_painter_end_update(struct xrdp_painter *self)
 {
+    LLOGLN(10, ("xrdp_painter_end_update:"));
     if (self == 0)
     {
         return 0;
     }
 
+    self->begin_end_level--;
+
+    if (self->painter != 0)
+    {
+#if defined(XRDP_PAINTER)
+        if (self->begin_end_level == 0)
+        {
+            xrdp_painter_send_dirty(self);
+            return 0;
+        }
+#endif
+    }
+
     libxrdp_orders_send(self->session);
     return 0;
 }
@@ -270,6 +440,7 @@ xrdp_painter_text_width(struct xrdp_painter *self, const char *text)
     struct xrdp_font_char *font_item;
     twchar *wstr;
 
+    LLOGLN(10, ("xrdp_painter_text_width:"));
     xrdp_painter_font_needed(self);
 
     if (self->font == 0)
@@ -307,6 +478,7 @@ xrdp_painter_text_height(struct xrdp_painter *self, const char *text)
     struct xrdp_font_char *font_item;
     twchar *wstr;
 
+    LLOGLN(10, ("xrdp_painter_text_height:"));
     xrdp_painter_font_needed(self);
 
     if (self->font == 0)
@@ -342,6 +514,13 @@ xrdp_painter_setup_brush(struct xrdp_painter *self,
 {
     int cache_id;
 
+    LLOGLN(10, ("xrdp_painter_setup_brush:"));
+
+    if (self->painter != 0)
+    {
+        return 0;
+    }
+
     g_memcpy(out_brush, in_brush, sizeof(struct xrdp_brush));
 
     if (in_brush->style == 3)
@@ -358,6 +537,38 @@ xrdp_painter_setup_brush(struct xrdp_painter *self,
     return 0;
 }
 
+#if defined(XRDP_PAINTER)
+
+/*****************************************************************************/
+static int APP_CC
+get_pt_format(struct xrdp_painter *self)
+{
+    switch (self->wm->screen->bpp)
+    {
+        case 8:
+            return PT_FORMAT_r3g3b2;
+        case 15:
+            return PT_FORMAT_a1r5g5b5;
+        case 16:
+            return PT_FORMAT_r5g6b5;
+    }
+    return PT_FORMAT_a8r8g8b8;
+}
+
+/*****************************************************************************/
+static int
+get_rgb_from_rdp_color(struct xrdp_painter *self, int rdp_color)
+{
+    if (self->wm->screen->bpp < 24)
+    {
+        return rdp_color;
+    }
+    /* well, this is really BGR2RGB */
+    return XR_RGB2BGR(rdp_color);
+}
+
+#endif
+
 /*****************************************************************************/
 /* fill in an area of the screen with one color */
 int APP_CC
@@ -375,11 +586,120 @@ xrdp_painter_fill_rect(struct xrdp_painter *self,
     int dy;
     int rop;
 
+    LLOGLN(10, ("xrdp_painter_fill_rect:"));
+
     if (self == 0)
     {
         return 0;
     }
 
+    dx = 0;
+    dy = 0;
+
+    if (self->painter != 0)
+    {
+#if defined(XRDP_PAINTER)
+        struct painter_bitmap dst_pb;
+        struct xrdp_bitmap *ldst;
+        struct painter_bitmap pat;
+
+        LLOGLN(10, ("xrdp_painter_fill_rect: dst->type %d", dst->type));
+        if (dst->type != WND_TYPE_OFFSCREEN)
+        {
+            LLOGLN(10, ("xrdp_painter_fill_rect: using painter"));
+
+            ldst = self->wm->screen;
+
+            g_memset(&dst_pb, 0, sizeof(dst_pb));
+            dst_pb.format = get_pt_format(self);
+            dst_pb.width = ldst->width;
+            dst_pb.stride_bytes = ldst->line_size;
+            dst_pb.height = ldst->height;
+            dst_pb.data = ldst->data;
+
+            LLOGLN(10, ("xrdp_painter_fill_rect: ldst->width %d ldst->height %d "
+                       "dst->data %p self->fg_color %d",
+                       ldst->width, ldst->height, ldst->data, self->fg_color));
+
+            xrdp_bitmap_get_screen_clip(dst, self, &clip_rect, &dx, &dy);
+            region = xrdp_region_create(self->wm);
+            xrdp_wm_get_vis_region(self->wm, dst, x, y, cx, cy, region,
+                                   self->clip_children);
+            x += dx;
+            y += dy;
+
+            rop = self->rop;
+            switch (self->rop)
+            {
+                case 0x5a:
+                    rop = PT_ROP_DSx;
+                    break;
+                case 0xf0:
+                    rop = PT_ROP_S;
+                    break;
+                case 0xfb:
+                    rop = PT_ROP_D;
+                    break;
+                case 0xc0:
+                    rop = PT_ROP_DSa;
+                    break;
+            }
+            painter_set_rop(self->painter, rop);
+
+            if (self->mix_mode == 0)
+            {
+                painter_set_pattern_mode(self->painter, PT_PATTERN_MODE_OPAQUE);
+                painter_set_fgcolor(self->painter, get_rgb_from_rdp_color(self, self->fg_color));
+                k = 0;
+                while (xrdp_region_get_rect(region, k, &rect) == 0)
+                {
+                    if (rect_intersect(&rect, &clip_rect, &draw_rect))
+                    {
+                        painter_set_clip(self->painter,
+                                         draw_rect.left, draw_rect.top,
+                                         draw_rect.right - draw_rect.left,
+                                         draw_rect.bottom - draw_rect.top);
+                        painter_fill_rect(self->painter, &dst_pb, x, y, cx, cy);
+                        xrdp_painter_add_dirty_rect(self, x, y, cx, cy, &draw_rect);
+                    }
+                    k++;
+                }
+            }
+            else
+            {
+                painter_set_pattern_mode(self->painter, PT_PATTERN_MODE_OPAQUE);
+                painter_set_fgcolor(self->painter, get_rgb_from_rdp_color(self, self->fg_color));
+                painter_set_bgcolor(self->painter, get_rgb_from_rdp_color(self, self->bg_color));
+                painter_set_pattern_origin(self->painter, self->brush.x_origin, self->brush.y_origin);
+                g_memset(&pat, 0, sizeof(pat));
+                pat.format = PT_FORMAT_c1;
+                pat.width = 8;
+                pat.stride_bytes = 1;
+                pat.height = 8;
+                pat.data = self->brush.pattern;
+                k = 0;
+                while (xrdp_region_get_rect(region, k, &rect) == 0)
+                {
+                    if (rect_intersect(&rect, &clip_rect, &draw_rect))
+                    {
+                        painter_set_clip(self->painter,
+                                         draw_rect.left, draw_rect.top,
+                                         draw_rect.right - draw_rect.left,
+                                         draw_rect.bottom - draw_rect.top);
+                        painter_fill_pattern(self->painter, &dst_pb, &pat,
+                                             x, y, x, y, cx, cy);
+                        xrdp_painter_add_dirty_rect(self, x, y, cx, cy, &draw_rect);
+                    }
+                    k++;
+                }
+            }
+            painter_clear_clip(self->painter);
+            xrdp_region_delete(region);
+        }
+        return 0;
+#endif
+    }
+
     /* todo data */
 
     if (dst->type == WND_TYPE_BITMAP) /* 0 */
@@ -508,11 +828,14 @@ xrdp_painter_draw_text(struct xrdp_painter *self,
     struct xrdp_font_char *font_item;
     twchar *wstr;
 
+    LLOGLN(10, ("xrdp_painter_draw_text:"));
+
     if (self == 0)
     {
         return 0;
     }
 
+
     len = g_mbstowcs(0, text, 0);
 
     if (len < 1)
@@ -534,6 +857,88 @@ xrdp_painter_draw_text(struct xrdp_painter *self,
         return 0;
     }
 
+    if (self->painter != 0)
+    {
+#if defined(XRDP_PAINTER)
+        struct painter_bitmap pat;
+        struct painter_bitmap dst_pb;
+        struct xrdp_bitmap *ldst;
+
+        if (dst->type != WND_TYPE_OFFSCREEN)
+        {
+            ldst = self->wm->screen;
+            /* convert to wide char */
+            wstr = (twchar *)g_malloc((len + 2) * sizeof(twchar), 0);
+            g_mbstowcs(wstr, text, len + 1);
+            font = self->font;
+            total_width = 0;
+            total_height = 0;
+            for (index = 0; index < len; index++)
+            {
+                font_item = font->font_items + wstr[index];
+                k = font_item->incby;
+                total_width += k;
+                total_height = MAX(total_height, font_item->height);
+            }
+            xrdp_bitmap_get_screen_clip(dst, self, &clip_rect, &dx, &dy);
+            region = xrdp_region_create(self->wm);
+            xrdp_wm_get_vis_region(self->wm, dst, x, y,
+                                   total_width, total_height,
+                                   region, self->clip_children);
+            x += dx;
+            y += dy;
+            g_memset(&dst_pb, 0, sizeof(dst_pb));
+            dst_pb.format = get_pt_format(self);
+            dst_pb.width = ldst->width;
+            dst_pb.stride_bytes = ldst->line_size;
+            dst_pb.height = ldst->height;
+            dst_pb.data = ldst->data;
+            painter_set_rop(self->painter, PT_ROP_S);
+            painter_set_pattern_origin(self->painter, 0, 0);
+            painter_set_pattern_mode(self->painter, PT_PATTERN_MODE_NORMAL);
+            painter_set_fgcolor(self->painter,
+                                get_rgb_from_rdp_color(self, self->fg_color));
+            k = 0;
+            while (xrdp_region_get_rect(region, k, &rect) == 0)
+            {
+                if (rect_intersect(&rect, &clip_rect, &draw_rect))
+                {
+                    painter_set_clip(self->painter,
+                                     draw_rect.left, draw_rect.top,
+                                     draw_rect.right - draw_rect.left,
+                                     draw_rect.bottom - draw_rect.top);
+                    for (index = 0; index < len; index++)
+                    {
+                        font_item = font->font_items + wstr[index];
+                        g_memset(&pat, 0, sizeof(pat));
+                        pat.format = PT_FORMAT_c1;
+                        pat.width = font_item->width;
+                        pat.stride_bytes = (font_item->width + 7) / 8;
+                        pat.height = font_item->height;
+                        pat.data = font_item->data;
+                        x1 = x + font_item->offset;
+                        y1 = y + (font_item->height + font_item->baseline);
+                        painter_fill_pattern(self->painter, &dst_pb, &pat,
+                                             0, 0, x1, y1,
+                                             font_item->width,
+                                             font_item->height);
+                        xrdp_painter_add_dirty_rect(self, x, y,
+                                                    font_item->width,
+                                                    font_item->height,
+                                                    &draw_rect);
+                        x += font_item->incby;
+                    }
+                }
+                k++;
+            }
+            painter_clear_clip(self->painter);
+            xrdp_region_delete(region);
+            g_free(wstr);
+        }
+        return 0;
+#endif
+    }
+
     /* convert to wide char */
     wstr = (twchar *)g_malloc((len + 2) * sizeof(twchar), 0);
     g_mbstowcs(wstr, text, len + 1);
@@ -616,11 +1021,18 @@ xrdp_painter_draw_text2(struct xrdp_painter *self,
     int dx;
     int dy;
 
+    LLOGLN(0, ("xrdp_painter_draw_text2:"));
+
     if (self == 0)
     {
         return 0;
     }
 
+    if (self->painter != 0)
+    {
+        return 0;
+    }
+
     /* todo data */
 
     if (dst->type == WND_TYPE_BITMAP)
@@ -711,11 +1123,76 @@ xrdp_painter_copy(struct xrdp_painter *self,
     int index;
     struct list *del_list;
 
+    LLOGLN(10, ("xrdp_painter_copy:"));
+
     if (self == 0 || src == 0 || dst == 0)
     {
         return 0;
     }
 
+    if (self->painter != 0)
+    {
+#if defined(XRDP_PAINTER)
+        struct painter_bitmap src_pb;
+        struct painter_bitmap dst_pb;
+        struct xrdp_bitmap *ldst;
+
+        LLOGLN(10, ("xrdp_painter_copy: src->type %d dst->type %d", src->type, dst->type));
+        LLOGLN(10, ("xrdp_painter_copy: self->rop 0x%2.2x", self->rop));
+
+        if (dst->type != WND_TYPE_OFFSCREEN)
+        {
+            LLOGLN(10, ("xrdp_painter_copy: using painter"));
+            ldst = self->wm->screen;
+
+            g_memset(&dst_pb, 0, sizeof(dst_pb));
+            dst_pb.format = get_pt_format(self);
+            dst_pb.width = ldst->width;
+            dst_pb.stride_bytes = ldst->line_size;
+            dst_pb.height = ldst->height;
+            dst_pb.data = ldst->data;
+
+            g_memset(&src_pb, 0, sizeof(src_pb));
+            src_pb.format = get_pt_format(self);
+            src_pb.width = src->width;
+            src_pb.stride_bytes = src->line_size;
+            src_pb.height = src->height;
+            src_pb.data = src->data;
+
+            xrdp_bitmap_get_screen_clip(dst, self, &clip_rect, &dx, &dy);
+            region = xrdp_region_create(self->wm);
+            xrdp_wm_get_vis_region(self->wm, dst, x, y, cx, cy, region,
+                                   self->clip_children);
+            x += dx;
+            y += dy;
+            k = 0;
+
+            painter_set_rop(self->painter, self->rop);
+            while (xrdp_region_get_rect(region, k, &rect1) == 0)
+            {
+                if (rect_intersect(&rect1, &clip_rect, &draw_rect))
+                {
+                    painter_set_clip(self->painter,
+                                     draw_rect.left, draw_rect.top,
+                                     draw_rect.right - draw_rect.left,
+                                     draw_rect.bottom - draw_rect.top);
+                    LLOGLN(10, ("  x %d y %d cx %d cy %d srcx %d srcy %d",
+                           x, y, cx, cy, srcx, srcy));
+                    painter_copy(self->painter, &dst_pb, x, y, cx, cy,
+                                 &src_pb, srcx, srcy);
+                    xrdp_painter_add_dirty_rect(self, x, y, cx, cy,
+                                                &draw_rect);
+                }
+                k++;
+            }
+            painter_clear_clip(self->painter);
+            xrdp_region_delete(region);
+        }
+
+        return 0;
+#endif
+    }
+
     /* todo data */
 
     if (dst->type == WND_TYPE_BITMAP)
@@ -848,7 +1325,7 @@ xrdp_painter_copy(struct xrdp_painter *self,
             while (i < (srcx + cx))
             {
                 w = MIN(64, ((srcx + cx) - i));
-                h = MIN(63, ((srcy + cy) - j));
+                h = MIN(64, ((srcy + cy) - j));
                 b = xrdp_bitmap_create(w, h, src->bpp, 0, self->wm);
 #if 1
                 xrdp_bitmap_copy_box_with_crc(src, b, i, j, w, h);
@@ -883,7 +1360,7 @@ xrdp_painter_copy(struct xrdp_painter *self,
                 i += 64;
             }
 
-            j += 63;
+            j += 64;
         }
 
         xrdp_region_delete(region);
@@ -918,11 +1395,18 @@ xrdp_painter_composite(struct xrdp_painter* self,
     int cache_srcidx;
     int cache_mskidx;
 
+    LLOGLN(0, ("xrdp_painter_composite:"));
+
     if (self == 0 || src == 0 || dst == 0)
     {
         return 0;
     }
 
+    if (self->painter != 0)
+    {
+        return 0;
+    }
+
     /* todo data */
 
     if (dst->type == WND_TYPE_BITMAP)
@@ -985,10 +1469,75 @@ xrdp_painter_line(struct xrdp_painter *self,
     int dy;
     int rop;
 
+    LLOGLN(10, ("xrdp_painter_line:"));
     if (self == 0)
     {
         return 0;
     }
+    if (self->painter != 0)
+    {
+#if defined(XRDP_PAINTER)
+        int x;
+        int y;
+        int cx;
+        int cy;
+        struct painter_bitmap dst_pb;
+        struct xrdp_bitmap *ldst;
+
+        LLOGLN(10, ("xrdp_painter_line: dst->type %d", dst->type));
+        LLOGLN(10, ("xrdp_painter_line: self->rop 0x%2.2x", self->rop));
+
+        if (dst->type != WND_TYPE_OFFSCREEN)
+        {
+            LLOGLN(10, ("xrdp_painter_line: using painter"));
+            ldst = self->wm->screen;
+
+            g_memset(&dst_pb, 0, sizeof(dst_pb));
+            dst_pb.format = get_pt_format(self);
+            dst_pb.width = ldst->width;
+            dst_pb.stride_bytes = ldst->line_size;
+            dst_pb.height = ldst->height;
+            dst_pb.data = ldst->data;
+
+            xrdp_bitmap_get_screen_clip(dst, self, &clip_rect, &dx, &dy);
+            region = xrdp_region_create(self->wm);
+            x = MIN(x1, x2);
+            y = MIN(y1, y2);
+            cx = g_abs(x1 - x2) + 1;
+            cy = g_abs(y1 - y2) + 1;
+            xrdp_wm_get_vis_region(self->wm, dst, x, y, cx, cy,
+                                   region, self->clip_children);
+            x1 += dx;
+            y1 += dy;
+            x2 += dx;
+            y2 += dy;
+            k = 0;
+            rop = self->rop;
+
+            painter_set_rop(self->painter, rop);
+            painter_set_fgcolor(self->painter, self->pen.color);
+            while (xrdp_region_get_rect(region, k, &rect) == 0)
+            {
+                if (rect_intersect(&rect, &clip_rect, &draw_rect))
+                {
+                    painter_set_clip(self->painter,
+                                     draw_rect.left, draw_rect.top,
+                                     draw_rect.right - draw_rect.left,
+                                     draw_rect.bottom - draw_rect.top);
+                    painter_line(self->painter, &dst_pb, x1, y1, x2, x2,
+                                 self->pen.width, 0);
+                    xrdp_painter_add_dirty_rect(self, x, y, cx, cy,
+                                                &draw_rect);
+                }
+                k++;
+            }
+            painter_clear_clip(self->painter);
+            xrdp_region_delete(region);
+        }
+
+        return 0;
+#endif
+    }
 
     /* todo data */
 
diff --git a/xrdp/xrdp_types.h b/xrdp/xrdp_types.h
index 46a23ca1..cc0eaa3c 100644
--- a/xrdp/xrdp_types.h
+++ b/xrdp/xrdp_types.h
@@ -429,6 +429,9 @@ struct xrdp_painter
   struct xrdp_session* session;
   struct xrdp_wm* wm; /* owner */
   struct xrdp_font* font;
+  void *painter;
+  struct xrdp_region *dirty_region;
+  int begin_end_level;
 };
 
 /* window or bitmap */
diff --git a/xrdp/xrdp_wm.c b/xrdp/xrdp_wm.c
index 446939bc..065bca5c 100644
--- a/xrdp/xrdp_wm.c
+++ b/xrdp/xrdp_wm.c
@@ -835,44 +835,6 @@ xrdp_wm_xor_pat(struct xrdp_wm *self, int x, int y, int cx, int cy)
 }
 
 /*****************************************************************************/
-/* this don't are about nothing, just copy the bits */
-/* no clipping rects, no windows in the way, nothing */
-static int APP_CC
-xrdp_wm_bitblt(struct xrdp_wm *self,
-               struct xrdp_bitmap *dst, int dx, int dy,
-               struct xrdp_bitmap *src, int sx, int sy,
-               int sw, int sh, int rop)
-{
-    //  int i;
-    //  int line_size;
-    //  int Bpp;
-    //  char* s;
-    //  char* d;
-
-    //  if (sw <= 0 || sh <= 0)
-    //    return 0;
-    if (self->screen == dst && self->screen == src)
-    {
-        /* send a screen blt */
-        //    Bpp = (dst->bpp + 7) / 8;
-        //    line_size = sw * Bpp;
-        //    s = src->data + (sy * src->width + sx) * Bpp;
-        //    d = dst->data + (dy * dst->width + dx) * Bpp;
-        //    for (i = 0; i < sh; i++)
-        //    {
-        //      //g_memcpy(d, s, line_size);
-        //      s += src->width * Bpp;
-        //      d += dst->width * Bpp;
-        //    }
-        libxrdp_orders_init(self->session);
-        libxrdp_orders_screen_blt(self->session, dx, dy, sw, sh, sx, sy, rop, 0);
-        libxrdp_orders_send(self->session);
-    }
-
-    return 0;
-}
-
-/*****************************************************************************/
 /* return true if rect is totally exposed going in reverse z order */
 /* from wnd up */
 static int APP_CC
@@ -935,6 +897,7 @@ xrdp_wm_move_window(struct xrdp_wm *self, struct xrdp_bitmap *wnd,
 
     MAKERECT(rect1, wnd->left, wnd->top, wnd->width, wnd->height);
 
+    self->painter->clip_children = 0;
     if (xrdp_wm_is_rect_vis(self, wnd, &rect1))
     {
         rect2 = rect1;
@@ -942,10 +905,13 @@ xrdp_wm_move_window(struct xrdp_wm *self, struct xrdp_bitmap *wnd,
 
         if (xrdp_wm_is_rect_vis(self, wnd, &rect2))
         {
-            /* if both src and dst are unobscured, we can do a bitblt move */
-            xrdp_wm_bitblt(self, self->screen, wnd->left + dx, wnd->top + dy,
-                           self->screen, wnd->left, wnd->top,
-                           wnd->width, wnd->height, 0xcc);
+            xrdp_painter_begin_update(self->painter);
+            xrdp_painter_copy(self->painter, self->screen, self->screen,
+                              wnd->left + dx, wnd->top + dy,
+                              wnd->width, wnd->height,
+                              wnd->left, wnd->top);
+            xrdp_painter_end_update(self->painter);
+
             wnd->left += dx;
             wnd->top += dy;
             r = xrdp_region_create(self);
@@ -960,9 +926,11 @@ xrdp_wm_move_window(struct xrdp_wm *self, struct xrdp_bitmap *wnd,
             }
 
             xrdp_region_delete(r);
+            self->painter->clip_children = 1;
             return 0;
         }
     }
+    self->painter->clip_children = 1;
 
     wnd->left += dx;
     wnd->top += dy;
@@ -971,6 +939,7 @@ xrdp_wm_move_window(struct xrdp_wm *self, struct xrdp_bitmap *wnd,
     return 0;
 }
 
+
 /*****************************************************************************/
 static int APP_CC
 xrdp_wm_undraw_dragging_box(struct xrdp_wm *self, int do_begin_end)