static void drawfile_redraw(const drawable_choices *choices,
wimp_draw *draw,
drawable_t *drawable,
int x,
int y)
{
int flatness;
const drawfile_diagram *diagram;
os_trfm *trfm;
diagram = drawable->image->image;
trfm = &drawable->details.drawfile.trfm;
trfm->entries[2][0] = x * draw_OS_UNIT;
trfm->entries[2][1] = y * draw_OS_UNIT;
flatness = choices->drawfile.flatness;
(void) xdrawfile_render((flatness == -1) ? 0 : drawfile_RENDER_GIVEN_FLATNESS,
diagram,
drawable->image->display.file_size,
trfm,
&draw->clip,
flatness);
}
bool draw_redraw(struct content *c, int x, int y,
int width, int height,
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
float scale, colour background_colour)
{
os_trfm matrix;
const char *source_data;
unsigned long source_size;
const void *data;
os_error *error;
if (plot.flush && !plot.flush())
return false;
if (!c->width || !c->height)
return false;
source_data = content__get_source_data(c, &source_size);
data = source_data;
/* Scaled image. Transform units (65536*OS units) */
matrix.entries[0][0] = width * 65536 / c->width;
matrix.entries[0][1] = 0;
matrix.entries[1][0] = 0;
matrix.entries[1][1] = height * 65536 / c->height;
/* Draw units. (x,y) = bottom left */
matrix.entries[2][0] = ro_plot_origin_x * 256 + x * 512 -
c->data.draw.x0 * width / c->width;
matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 -
c->data.draw.y0 * height / c->height;
error = xdrawfile_render(0, (drawfile_diagram *) data,
(int) source_size, &matrix, 0, 0);
if (error) {
LOG(("xdrawfile_render: 0x%x: %s",
error->errnum, error->errmess));
return false;
}
return true;
}