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rotate in expose-event, not in render

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Sebastian Ramacher 2011-12-10 11:44:27 +01:00
parent 6c0a63943f
commit 864dc5bd1d
1 changed files with 33 additions and 26 deletions
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59
render.c
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@ -13,14 +13,14 @@ void* render_job(void* data);
bool render(zathura_t* zathura, zathura_page_t* page);
static void
page_calc_height_width(zathura_page_t* page, unsigned int* page_height, unsigned int* page_width)
page_calc_height_width(zathura_page_t* page, unsigned int* page_height, unsigned int* page_width, bool rotate)
{
if (page->document->rotate == 0 || page->document->rotate == 180) {
*page_width = page->width * page->document->scale;
*page_height = page->height * page->document->scale;
} else {
if (rotate && page->document->rotate % 180) {
*page_width = page->height * page->document->scale;
*page_height = page->width * page->document->scale;
} else {
*page_width = page->width * page->document->scale;
*page_height = page->height * page->document->scale;
}
}
@ -165,7 +165,7 @@ render(zathura_t* zathura, zathura_page_t* page)
/* create cairo surface */
unsigned int page_width = 0;
unsigned int page_height = 0;
page_calc_height_width(page, &page_height, &page_width);
page_calc_height_width(page, &page_height, &page_width, false);
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, page_width, page_height);
@ -191,26 +191,10 @@ render(zathura_t* zathura, zathura_page_t* page)
cairo_restore(cairo);
cairo_save(cairo);
switch(page->document->rotate) {
case 90:
cairo_translate(cairo, page_width, 0);
break;
case 180:
cairo_translate(cairo, page_width, page_height);
break;
case 270:
cairo_translate(cairo, 0, page_height);
break;
}
if (fabs(zathura->document->scale - 1.0f) > FLT_EPSILON) {
cairo_scale(cairo, zathura->document->scale, zathura->document->scale);
}
if (page->document->rotate != 0) {
cairo_rotate(cairo, page->document->rotate * G_PI / 180.0);
}
if (zathura_page_render(page, cairo) == false) {
cairo_destroy(cairo);
cairo_surface_destroy(surface);
@ -282,7 +266,7 @@ render_all(zathura_t* zathura)
page->surface = NULL;
unsigned int page_height = 0, page_width = 0;
page_calc_height_width(page, &page_height, &page_width);
page_calc_height_width(page, &page_height, &page_width, true);
gtk_widget_set_size_request(page->drawing_area, page_width, page_height);
gtk_widget_queue_resize(page->drawing_area);
@ -308,13 +292,36 @@ page_expose_event(GtkWidget* UNUSED(widget), GdkEventExpose* UNUSED(event),
return FALSE;
}
unsigned int page_height = 0, page_width = 0;
page_calc_height_width(page, &page_height, &page_width, true);
if (page->surface != NULL) {
cairo_save(cairo);
switch(page->document->rotate) {
case 90:
cairo_translate(cairo, page_width, 0);
break;
case 180:
cairo_translate(cairo, page_width, page_height);
break;
case 270:
cairo_translate(cairo, 0, page_height);
break;
}
if (page->document->rotate != 0) {
cairo_rotate(cairo, page->document->rotate * G_PI / 180.0);
}
cairo_set_source_surface(cairo, page->surface, 0, 0);
cairo_paint(cairo);
cairo_restore(cairo);
} else {
/* set background color */
cairo_set_source_rgb(cairo, 255, 255, 255);
cairo_rectangle(cairo, 0, 0, page->width * page->document->scale, page->height * page->document->scale);
cairo_rectangle(cairo, 0, 0, page_width, page->height * page->height);
cairo_fill(cairo);
/* write text */
@ -324,8 +331,8 @@ page_expose_event(GtkWidget* UNUSED(widget), GdkEventExpose* UNUSED(event),
cairo_set_font_size(cairo, 16.0);
cairo_text_extents_t extents;
cairo_text_extents(cairo, text, &extents);
double x = (page->width * page->document->scale) / 2 - (extents.width / 2 + extents.x_bearing);
double y = (page->height * page->document->scale) / 2 - (extents.height / 2 + extents.y_bearing);
double x = page_width * 0.5 - (extents.width * 0.5 + extents.x_bearing);
double y = page_height * 0.5 - (extents.height * 0.5 + extents.y_bearing);
cairo_move_to(cairo, x, y);
cairo_show_text(cairo, text);