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author | dscho <dscho> | 2006-09-12 15:53:58 +0000 |
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committer | dscho <dscho> | 2006-09-12 15:53:58 +0000 |
commit | a26dbfe3d013b5fc8d5f4be3677db1c372e22201 (patch) | |
tree | ca8052d252050ef20b809fdcb9a0e4655228c3c8 /VisualNaCro/nacro.c | |
parent | 9b93f295e90b4d8560068bda8659617f4754a88f (diff) | |
download | libvncserver-a26dbfe3d013b5fc8d5f4be3677db1c372e22201.zip libvncserver-a26dbfe3d013b5fc8d5f4be3677db1c372e22201.tar.gz |
implement rubberband for rectangular selection
Diffstat (limited to 'VisualNaCro/nacro.c')
-rw-r--r-- | VisualNaCro/nacro.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/VisualNaCro/nacro.c b/VisualNaCro/nacro.c index cf4668b..f0f2149 100644 --- a/VisualNaCro/nacro.c +++ b/VisualNaCro/nacro.c @@ -575,6 +575,78 @@ const char *gettext_client(resource_t res) return r->text_client; } +static void copy_line(rfbScreenInfo *dest, char *backup, + int x0, int y0, int x1, int y1, int color_offset) +{ + uint8_t *d = (uint8_t *)dest->frameBuffer, *s = (uint8_t *)backup; + int i; + int steps0 = x1 > x0 ? x1 - x0 : x0 - x1; + int steps1 = y1 > y0 ? y1 - y0 : y0 - y1; + + if (steps1 > steps0) + steps0 = steps1; + else if (steps0 == 0) + steps0 = 1; + + for (i = 0; i <= steps0; i++) { + int j, index = 4 * (x0 + i * (x1 - x0) / steps0 + + dest->width * (y0 + i * (y1 - y0) / steps0)); + for (j = 0; j < 4; j++) + d[index + j] = s[index + j] + color_offset; + } + + rfbMarkRectAsModified(dest, x0 - 5, y0 - 5, x1 + 1, y1 + 2); +} + +result_t rubberband(resource_t resource, coordinate_t x0, coordinate_t y0) +{ + private_resource_t* res=get_resource(resource); + char* fake_frame_buffer; + char* backup; + int w, h, x, y; + + if(res == NULL || res->server==NULL) + return -1; + + x = res->x; + y = res->y; + w = res->server->width; + h = res->server->height; + fake_frame_buffer = malloc(w * 4 * h); + if(!fake_frame_buffer) + return 0; + memcpy(fake_frame_buffer, res->server->frameBuffer, w * 4 * h); + + backup = res->server->frameBuffer; + res->server->frameBuffer = fake_frame_buffer; + + while (res->buttons) { + result_t r = waitforinput(resource, 1000000L); + if (x == res->x && y == res->y) + continue; + copy_line(res->server, backup, x0, y0, x, y0, 0); + copy_line(res->server, backup, x0, y0, x0, y, 0); + copy_line(res->server, backup, x, y0, x, y, 0); + copy_line(res->server, backup, x0, y, x, y, 0); + x = res->x; + y = res->y; + copy_line(res->server, backup, x0, y0, x, y0, 0x80); + copy_line(res->server, backup, x0, y0, x0, y, 0x80); + copy_line(res->server, backup, x, y0, x, y, 0x80); + copy_line(res->server, backup, x0, y, x, y, 0x80); + } + + copy_line(res->server, backup, x0, y0, x, y0, 0); + copy_line(res->server, backup, x0, y0, x0, y, 0); + copy_line(res->server, backup, x, y0, x, y, 0); + copy_line(res->server, backup, x0, y, x, y, 0); + + res->server->frameBuffer=backup; + free(fake_frame_buffer); + + return RESULT_MOUSE; +} + const char *gettext_server(resource_t res) { private_resource_t* r=get_resource(res); |