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Continuation of Issue 210:Bottom pixels not complete visable in some zoom modes. I chose to have a dead zone at bottom of zoomed area only when it's at bottom of image too. The dead zone is created only if the remaining space is <= 50 of a normal zoomed line, So the usable pixels are guaranteed to be > half a normal line, and the dead space is always <= half a line.

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1445 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2010-04-05 17:56:36 +00:00
parent a865415df6
commit 048f197636
5 changed files with 32 additions and 66 deletions
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50
src/windows.c
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@@ -1767,21 +1767,29 @@ void Compute_magnifier_data(void)
if (Menu_Y%Main_magnifier_factor)
Main_magnifier_height++;
if (Main_magnifier_mode && Main_magnifier_offset_X)
{
if (Main_image_width<Main_magnifier_offset_X+Main_magnifier_width)
Main_magnifier_offset_X=Main_image_width-Main_magnifier_width;
if (Main_magnifier_offset_X<0) Main_magnifier_offset_X=0;
}
if (Main_magnifier_mode && Main_magnifier_offset_Y)
{
if (Main_image_height<Main_magnifier_offset_Y+Main_magnifier_height)
Main_magnifier_offset_Y=Main_image_height-Main_magnifier_height+1;
if (Main_magnifier_offset_Y<0) Main_magnifier_offset_Y=0;
}
Clip_magnifier_offsets(&Main_magnifier_offset_X, &Main_magnifier_offset_Y);
}
void Clip_magnifier_offsets(short *x_offset, short *y_offset)
{
if (Main_magnifier_mode)
{
if (*x_offset)
{
if (Main_image_width<*x_offset+Main_magnifier_width)
*x_offset=Main_image_width-Main_magnifier_width;
if (*x_offset<0)
*x_offset=0;
}
if (*y_offset)
{
if (Main_image_height<*y_offset+Main_magnifier_height)
*y_offset=Main_image_height-Main_magnifier_height+(Main_magnifier_height*Main_magnifier_factor-Menu_Y>=Main_magnifier_factor/2);
if (*y_offset<0)
*y_offset=0;
}
}
}
/// Changes magnifier factor and updates everything needed
void Change_magnifier_factor(byte factor_index, byte point_at_mouse)
@@ -1832,14 +1840,7 @@ void Change_magnifier_factor(byte factor_index, byte point_at_mouse)
Main_magnifier_offset_Y = target_y-(Main_magnifier_height>>1);
}
// Fix cases where the image would overflow on edges
if (Main_magnifier_offset_X+Main_magnifier_width>Main_image_width)
Main_magnifier_offset_X=Main_image_width-Main_magnifier_width;
if (Main_magnifier_offset_Y+Main_magnifier_height>Main_image_height)
Main_magnifier_offset_Y=Main_image_height-Main_magnifier_height+1;
if (Main_magnifier_offset_X<0)
Main_magnifier_offset_X=0;
if (Main_magnifier_offset_Y<0)
Main_magnifier_offset_Y=0;
Clip_magnifier_offsets(&Main_magnifier_offset_X, &Main_magnifier_offset_Y);
if (magnified_view_leads)
Position_screen_according_to_zoom();
@@ -2601,9 +2602,12 @@ void Display_all_screen(void)
// Calcul du nombre de lignes visibles de l'image zoomée
if (Main_image_height<Main_magnifier_height)
height=Main_image_height*Main_magnifier_factor;
else if (Main_image_height<Main_magnifier_offset_Y+Main_magnifier_height)
// Omit "last line" if it's outside picture limits
height=Menu_Y/Main_magnifier_factor*Main_magnifier_factor;
else
height=Menu_Y;
Display_zoomed_screen(width,height,Main_image_width,Horizontal_line_buffer);
// Effacement de la partie non-image dans la partie zoomée:
@@ -2611,7 +2615,7 @@ void Display_all_screen(void)
Block(Main_X_zoom+(Main_image_width*Main_magnifier_factor),0,
(Main_magnifier_width-Main_image_width)*Main_magnifier_factor,
Menu_Y,Main_backups->Pages->Transparent_color);
if (Main_image_height<Main_magnifier_height)
if (height<Menu_Y)
Block(Main_X_zoom,height,width*Main_magnifier_factor,(Menu_Y-height),Main_backups->Pages->Transparent_color);
}