[fbcon] Move margin calculations to fbcon.c
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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bc69777a40
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@ -83,8 +83,6 @@ struct vesafb {
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physaddr_t start;
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/** Pixel geometry */
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struct fbcon_geometry pixel;
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/** Margin */
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struct fbcon_margin margin;
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/** Colour mapping */
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struct fbcon_colour_map map;
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/** Font definition */
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@ -419,12 +417,6 @@ static void vesafb_restore ( void ) {
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static int vesafb_init ( struct console_configuration *config ) {
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uint32_t discard_b;
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uint16_t *mode_numbers;
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unsigned int xgap;
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unsigned int ygap;
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unsigned int left;
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unsigned int right;
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unsigned int top;
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unsigned int bottom;
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int mode_number;
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int rc;
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@ -450,31 +442,13 @@ static int vesafb_init ( struct console_configuration *config ) {
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if ( ( rc = vesafb_set_mode ( mode_number ) ) != 0 )
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goto err_set_mode;
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/* Calculate margin. If the actual screen size is larger than
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* the requested screen size, then update the margins so that
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* the margin remains relative to the requested screen size.
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* (As an exception, if a zero margin was specified then treat
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* this as meaning "expand to edge of actual screen".)
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*/
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xgap = ( vesafb.pixel.width - config->width );
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ygap = ( vesafb.pixel.height - config->height );
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left = ( xgap / 2 );
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right = ( xgap - left );
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top = ( ygap / 2 );
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bottom = ( ygap - top );
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vesafb.margin.left = ( config->left + ( config->left ? left : 0 ) );
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vesafb.margin.right = ( config->right + ( config->right ? right : 0 ) );
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vesafb.margin.top = ( config->top + ( config->top ? top : 0 ) );
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vesafb.margin.bottom =
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( config->bottom + ( config->bottom ? bottom : 0 ) );
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/* Get font data */
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vesafb_font();
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/* Initialise frame buffer console */
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if ( ( rc = fbcon_init ( &vesafb.fbcon, phys_to_user ( vesafb.start ),
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&vesafb.pixel, &vesafb.margin, &vesafb.map,
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&vesafb.font, config->pixbuf ) ) != 0 )
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&vesafb.pixel, &vesafb.map, &vesafb.font,
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config ) ) != 0 )
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goto err_fbcon_init;
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free ( mode_numbers );
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@ -575,22 +575,24 @@ static int fbcon_picture_init ( struct fbcon *fbcon,
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* @v fbcon Frame buffer console
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* @v start Start address
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* @v pixel Pixel geometry
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* @v margin Minimum margin
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* @v map Colour mapping
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* @v font Font definition
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* @v pixbuf Background picture (if any)
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* @v config Console configuration
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* @ret rc Return status code
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*/
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int fbcon_init ( struct fbcon *fbcon, userptr_t start,
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struct fbcon_geometry *pixel,
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struct fbcon_margin *margin,
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struct fbcon_colour_map *map,
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struct fbcon_font *font,
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struct pixel_buffer *pixbuf ) {
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struct console_configuration *config ) {
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int width;
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int height;
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unsigned int xgap;
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unsigned int ygap;
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unsigned int left;
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unsigned int right;
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unsigned int top;
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unsigned int bottom;
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int rc;
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/* Initialise data structure */
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@ -609,24 +611,43 @@ int fbcon_init ( struct fbcon *fbcon, userptr_t start,
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user_to_phys ( fbcon->start, 0 ),
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user_to_phys ( fbcon->start, fbcon->len ) );
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/* Calculate margin. If the actual screen size is larger than
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* the requested screen size, then update the margins so that
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* the margin remains relative to the requested screen size.
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* (As an exception, if a zero margin was specified then treat
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* this as meaning "expand to edge of actual screen".)
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*/
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xgap = ( pixel->width - config->width );
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ygap = ( pixel->height - config->height );
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left = ( xgap / 2 );
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right = ( xgap - left );
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top = ( ygap / 2 );
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bottom = ( ygap - top );
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fbcon->margin.left = ( config->left + ( config->left ? left : 0 ) );
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fbcon->margin.right = ( config->right + ( config->right ? right : 0 ) );
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fbcon->margin.top = ( config->top + ( config->top ? top : 0 ) );
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fbcon->margin.bottom =
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( config->bottom + ( config->bottom ? bottom : 0 ) );
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/* Expand margin to accommodate whole characters */
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width = ( pixel->width - margin->left - margin->right );
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height = ( pixel->height - margin->top - margin->bottom );
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width = ( pixel->width - fbcon->margin.left - fbcon->margin.right );
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height = ( pixel->height - fbcon->margin.top - fbcon->margin.bottom );
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if ( ( width < FBCON_CHAR_WIDTH ) ||
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( height < ( ( int ) font->height ) ) ) {
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DBGC ( fbcon, "FBCON %p has unusable character area "
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"[%d-%d),[%d-%d)\n", fbcon,
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margin->left, ( pixel->width - margin->right ),
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margin->top, ( pixel->height - margin->bottom ) );
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"[%d-%d),[%d-%d)\n", fbcon, fbcon->margin.left,
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( pixel->width - fbcon->margin.right ),
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fbcon->margin.top,
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( pixel->height - fbcon->margin.bottom ) );
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rc = -EINVAL;
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goto err_margin;
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}
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xgap = ( width % FBCON_CHAR_WIDTH );
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ygap = ( height % font->height );
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fbcon->margin.left = ( margin->left + ( xgap / 2 ) );
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fbcon->margin.top = ( margin->top + ( ygap / 2 ) );
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fbcon->margin.right = ( margin->right + ( xgap - ( xgap / 2 ) ) );
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fbcon->margin.bottom = ( margin->bottom + ( ygap - ( ygap / 2 ) ) );
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fbcon->margin.left += ( xgap / 2 );
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fbcon->margin.top += ( ygap / 2 );
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fbcon->margin.right += ( xgap - ( xgap / 2 ) );
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fbcon->margin.bottom += ( ygap - ( ygap / 2 ) );
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fbcon->indent = ( ( fbcon->margin.top * pixel->stride ) +
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( fbcon->margin.left * pixel->len ) );
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@ -661,7 +682,8 @@ int fbcon_init ( struct fbcon *fbcon, userptr_t start,
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memset_user ( fbcon->start, 0, 0, fbcon->len );
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/* Generate pixel buffer from background image, if applicable */
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if ( pixbuf && ( ( rc = fbcon_picture_init ( fbcon, pixbuf ) ) != 0 ) )
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if ( config->pixbuf &&
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( ( rc = fbcon_picture_init ( fbcon, config->pixbuf ) ) != 0 ) )
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goto err_picture;
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/* Draw background picture (including margins), if applicable */
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@ -12,8 +12,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/ansiesc.h>
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#include <ipxe/uaccess.h>
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struct pixel_buffer;
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#include <ipxe/console.h>
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/** Character width, in pixels */
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#define FBCON_CHAR_WIDTH 9
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@ -149,10 +148,9 @@ struct fbcon {
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extern int fbcon_init ( struct fbcon *fbcon, userptr_t start,
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struct fbcon_geometry *pixel,
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struct fbcon_margin *margin,
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struct fbcon_colour_map *map,
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struct fbcon_font *font,
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struct pixel_buffer *pixbuf );
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struct console_configuration *config );
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extern void fbcon_fini ( struct fbcon *fbcon );
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extern void fbcon_putchar ( struct fbcon *fbcon, int character );
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