From c3e1500a4815225f08e1b20dd066559e8c92c280 Mon Sep 17 00:00:00 2001 From: Nickolay V. Shmyrev Date: Thu, 07 Apr 2005 15:28:06 +0000 Subject: Recent files support. 2005-04-07 Nickolay V. Shmyrev * cut-n-paste/recent-files/Makefile.am: * data/evince-ui.xml, shell/Makefile.am: * shell/ev-application.c, shell/ev-application.h: * shell/ev-window.c: Recent files support. * configure.ac: Added "ru" to ALL_LINGUAS. * dvju: new backend to support DJVU files. * dvi: new backend to support DVI. * configure.ac, Makefile.am, shell/Makefile.am, ev-window.c: * ev-application.c: Support for new backends. * help, ev-window.c, main.c shell/Makefile.am: --- (limited to 'dvi/pixbuf-device.c') diff --git a/dvi/pixbuf-device.c b/dvi/pixbuf-device.c new file mode 100644 index 0000000..9ce9319 --- /dev/null +++ b/dvi/pixbuf-device.c @@ -0,0 +1,212 @@ +#include "pixbuf-device.h" +#include + +typedef struct _DviPixbufDevice +{ + GdkPixbuf *pixbuf; + + gboolean valid; + + gint xmargin; + gint ymargin; +} DviPixbufDevice; + +static void dvi_pixbuf_draw_rule(DviContext *dvi, int x, int y, Uint w, Uint h, int fill); + +static void dvi_pixbuf_draw_glyph(DviContext *dvi, DviFontChar *ch, int x0, int y0) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) dvi->device.device_data; + + int x, y, w, h; + int isbox; + DviGlyph *glyph; + + glyph = &ch->grey; + + isbox = (glyph->data == NULL || (dvi->params.flags & MDVI_PARAM_CHARBOXES)); + + x = - glyph->x + x0 + c_device->xmargin; + y = - glyph->y + y0 + c_device->ymargin; + w = glyph->w; + h = glyph->h; + + if (x < 0 || y < 0 + || x + w > gdk_pixbuf_get_width (c_device->pixbuf) + || y + h > gdk_pixbuf_get_height (c_device->pixbuf)) + return; + + if (isbox) { + dvi_pixbuf_draw_rule(dvi, x - c_device->xmargin, y - c_device->ymargin, w, h, FALSE); + } + else { + gdk_pixbuf_copy_area (GDK_PIXBUF (glyph->data), + 0, 0, + w, h, + c_device->pixbuf, x, y); + } +} + +static void dvi_pixbuf_draw_rule(DviContext *dvi, int x, int y, Uint w, Uint h, int fill) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) dvi->device.device_data; + gint rowstride; + gchar *p; + gint i, j; + + x += c_device->xmargin; y += c_device->ymargin; + + if (x < 0 || y < 0 + || x + w > gdk_pixbuf_get_width (c_device->pixbuf) + || y + h > gdk_pixbuf_get_height (c_device->pixbuf)) + return; + + rowstride = gdk_pixbuf_get_rowstride (c_device->pixbuf); + p = gdk_pixbuf_get_pixels (c_device->pixbuf) + rowstride * y + 4 * x; + + for (i = 0; i < h; i++) { + if (i == 0 || i == h - 1 || fill) { + for (j = 0; j < w; j++) { + p[j * 4] = 0x00; + p[j * 4 + 1] = 0x00; + p[j * 4 + 2] = 0x00; + p[j * 4 + 3] = 0xff; + } + } else { + p[0] = 0x00; + p[1] = 0x00; + p[2] = 0x00; + p[3] = 0xff; + p[(w - 1) * 4] = 0x00; + p[(w - 1) * 4 + 1] = 0x00; + p[(w - 1) * 4 + 2] = 0x00; + p[(w - 1) * 4 + 3] = 0xff; + } + p += rowstride; + } +} + +static int dvi_pixbuf_interpolate_colors(void *device_data, + Ulong *pixels, int nlevels, Ulong fg, Ulong bg, double g, int density) +{ + double frac; + GdkColor color, color_fg, color_bg; + int i, n; + + color_bg.red = (bg >> 16) & 0xff; + color_bg.green = (bg >> 8) & 0xff; + color_bg.blue = bg & 0xff; + + color_fg.red = fg >> 16 & 0xff; + color_fg.green = fg >> 8 & 0xff; + color_fg.blue = fg & 0xff; + + n = nlevels - 1; + for(i = 0; i < nlevels; i++) { + if(g > 0) + frac = pow((double)i / n, 1 / g); + else + frac = 1 - pow((double)(n - i) / n, -g); + color.red = frac * ((double)color_fg.red - color_bg.red) + color_bg.red; + color.green = frac * ((double)color_fg.green - color_bg.green) + color_bg.green; + color.blue = frac * ((double)color_fg.blue - color_bg.blue) + color_bg.blue; + + pixels[i] = (color.red << 16) + (color.green << 8) + color.blue + 0xff000000; + } + + return nlevels; +} + +static void *dvi_pixbuf_create_image(void *device_data, Uint w, Uint h, Uint bpp) +{ + + return gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, w, h); + + return NULL; +} + +static void dvi_pixbuf_free_image(void *ptr) +{ + g_object_unref (GDK_PIXBUF(ptr)); +} + +static void dvi_pixbuf_put_pixel(void *image, int x, int y, Ulong color) +{ + gchar *p; + + p = gdk_pixbuf_get_pixels (GDK_PIXBUF(image)) + y * gdk_pixbuf_get_rowstride(GDK_PIXBUF(image)) + x * 4; + + p[0] = (color >> 16) & 0xff; + p[1] = (color >> 8) & 0xff; + p[2] = color & 0xff; + p[3] = (color >> 24) & 0xff; +} + +static void dvi_pixbuf_set_color(void *device_data, Ulong fg, Ulong bg) +{ + + return; +} + +void mdvi_pixbuf_device_init (DviDevice *device) +{ + device->device_data = + g_new0 (DviPixbufDevice, 1); + + device->draw_glyph = dvi_pixbuf_draw_glyph; + device->draw_rule = dvi_pixbuf_draw_rule; + device->alloc_colors = dvi_pixbuf_interpolate_colors; + device->create_image = dvi_pixbuf_create_image; + device->free_image = dvi_pixbuf_free_image; + device->put_pixel = dvi_pixbuf_put_pixel; + device->set_color = dvi_pixbuf_set_color; + device->refresh = NULL; + + return; +} + +void mdvi_pixbuf_device_free (DviDevice *device) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) device->device_data; + + if (c_device->pixbuf) + g_object_unref (c_device->pixbuf); + + g_free (c_device); +} + +GdkPixbuf * +mdvi_pixbuf_device_get_pixbuf (DviDevice *device) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) device->device_data; + + return g_object_ref (c_device->pixbuf); +} + +void +mdvi_pixbuf_device_render (DviContext * dvi) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) dvi->device.device_data; + gint page_width; + gint page_height; + + if (c_device->pixbuf) + g_object_unref (c_device->pixbuf); + + page_width = dvi->dvi_page_w * dvi->params.conv + 2 * c_device->xmargin; + page_height = dvi->dvi_page_h * dvi->params.vconv + 2 * c_device->ymargin; + + c_device->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, page_width, page_height); + gdk_pixbuf_fill (c_device->pixbuf, 0xffffffff); + + mdvi_dopage (dvi, dvi->currpage); +} + + +void +mdvi_pixbuf_device_set_margins (DviDevice *device, gint xmargin, gint ymargin) +{ + DviPixbufDevice *c_device = (DviPixbufDevice *) device->device_data; + + c_device->xmargin = xmargin; + c_device->ymargin = ymargin; +} -- cgit v0.9.1