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Calculates the cropping offset with the ratio.

merge-requests/213/head^2
thierry1970 2020-04-02 10:41:59 +02:00
rodzic 6c0c360ce7
commit 7f10387ab0
1 zmienionych plików z 10 dodań i 9 usunięć
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19
backend/escl/escl_crop.c
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@ -37,6 +37,7 @@ escl_crop_surface(capabilities_t *scanner,
int *width,
int *height)
{
double ratio = 1.0;
int x_off = 0, x = 0;
int real_w = 0;
int y_off = 0, y = 0;
@ -44,24 +45,24 @@ escl_crop_surface(capabilities_t *scanner,
unsigned char *surface_crop = NULL;
DBG( 1, "Escl Image Crop\n");
if (w < (int)scanner->width)
scanner->width = w;
ratio = (double)w / (double)scanner->width;
scanner->width = w;
if (scanner->pos_x < 0)
scanner->pos_x = 0;
if (scanner->width > scanner->pos_x)
x_off = scanner->pos_x;
if (scanner->pos_x && scanner->width > scanner->pos_x)
x_off = (int)((double)scanner->pos_x * ratio);
real_w = scanner->width - x_off;
if (h < (int)scanner->height)
scanner->height = h;
scanner->height = h;
if (scanner->pos_y < 0)
scanner->pos_y = 0;
if (scanner->pos_y < scanner->height)
y_off = scanner->pos_y;
scanner->pos_y = 0;
if (scanner->pos_y && scanner->pos_y < scanner->height)
y_off = (int)((double)scanner->pos_y * ratio);
real_h = scanner->height - y_off;
*width = real_w;
*height = real_h;
if (x_off > 0 || real_w < scanner->width ||
y_off > 0 || real_h < scanner->height) {
surface_crop = (unsigned char *)malloc (sizeof (unsigned char) * real_w