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Claims  |
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What is claimed is:
1. A computer system for resizing a window containing a first display for
displaying a first data in a tabular format and a second display for
displaying a second data in a graphical format, to a height and a width
thereby creating a resized window, comprising:
first drawing means for drawing within the resized window a resized first
display to a first scale having a first height and a first width that fits
within the resized window with said first data in the tabular format
rescaled to conform to said resized first display, said resized first
display drawn only when said first height is greater than a predetermined
minimum height threshold representing a height below which the first data
is considered to be unreadable in the tabular format; and
second drawing means for drawing a resized second display within the
resized window to a second scale having a second height and a second width
to fill the height and a remaining width of the resized window, wherein
the second data in the graphical format is rescaled to conform to said
resized second display.
2. A computer system according to claim 1, wherein said computer system
further comprising:
zoom determining means for determining if the resized window is zoomed; and
zoom drawing means for drawing a zoomed view of the first display and the
second display to the resized window if said zoom determining means
determines that the resized window is zoomed.
3. A computer system according to claim 1,
wherein said tabular format comprises a tabular representation of the first
data in a spreadsheet, wherein said spreadsheet comprises a plurality of
rows, and
wherein said graphical format comprises a graphical representation of one
or more data values in said spreadsheet.
4. A computer system according to claim 3, wherein said first drawing means
comprises means for drawing the first display to a constant width, and
wherein said first drawing means does not draw the first display when the
width of the resized window is less than said constant width.
5. A computer system according to claim 3, wherein said first drawing means
comprises:
means for proportionally adjusting said rows of said spreadsheet to fit
within said first height of said resized first display.
6. A computer system according to claim 3, wherein said minimum height
threshold is calculated from a number of visible rows multiplied by a
number of pixels that a row requires to be readable for a given font style
and size.
7. A computer system according to claim 6, wherein said given font style
and size are constant and said required number of pixels are constant.
8. A computer system according to claim 6, wherein said given font style
and size are not constant and further wherein said required number of
pixels are dynamically determined.
9. A method for resizing a window on a computer screen, the window
containing a first display for displaying first data in a tabular format
and a second display for displaying second data in a graphical format, the
resized window having a height and a width, the resized first display
having a first width and a first height and the resized second display
having a second width and a second height, the method comprising the steps
of:
(a) determining whether the resized first display has a first height that
is greater than a predetermined minimum height threshold representing a
height below which the first data is unreadable when displayed in said
tabular format;
(b) drawing to said first scale the first display when said step (a)
determines that said first height is greater than said predetermined
minimum height threshold;
(c) resealing the first data in the tabular format to conform to the
resized first display when said step (b) is performed;
(d) drawing a resized second display within the resized window to a second
scale having a second height and a second width to fill the height and a
remaining width of the resized window after said steps (b) and (c) are
performed; and
(e) resealing the second data in the graphical format within the second
display to conform to said resized second display.
10. A method according to claim 9, further comprising the steps of:
(f) determining, prior to said step (a), whether the resized window is
zoomed; and
(g) drawing, prior to said step (a) and after said step (d), a zoomed view
of the first resized display and the second resized display to the resized
window when said step (d) determines that the resized window is zoomed.
11. A method according to claim 9, wherein said minimum height threshold is
calculated from a number of visible rows multiplied by a number of pixels
that a row requires to be readable for a given font style and size.
12. A method according to claim 11, wherein said given font style and size
are constant and said required number of pixels are constant.
13. A method according to claim 9, wherein said first width is a constant
width, the method further comprising the steps of:
(f) determining, prior to said step (b), whether said constant width is
less than or equal to the width of the resized window;
wherein said step (b) further includes the step of:
(1) drawing the first resized display to said constant width when said step
(d) determines that said constant width is less than or equal to said
resized window width.
14. A method according to claim 9, wherein said tabular format includes a
plurality of rows of data, and wherein said step (b) comprises the step
of:
(1) proportionally adjusting a plurality of rows of the first display to
fit within the height of the resized window.
15. A computer program product for use with a windows environment,
including a computer usable medium having computer readable program code
means embodied in said medium for enabling a computer to resize a window
containing a first display for displaying first data in a tabular format
and a second display for displaying second data in a graphical format, to
a height and a width thereby creating a resized window, said computer
program product comprising:
first computer readable program code means for drawing within the resized
window a resized first display to a first scale having a first height and
a first width that fits within the resized window with said first data in
the tabular format resealed to conform to said resized first display, said
resized first display drawn only when said first height is greater than a
predetermined minimum height threshold representing a height below which
the first data is considered to be unreadable in the tabular format; and
second computer readable program code means for drawing a resized second
display within the resized window to a second scale having a second height
and a second width to fill the height and a remaining width of the resized
window, wherein the second data in the graphical format is resealed to
conform to said resized second display.
16. A computer program product according to claim 15, wherein said minimum
height threshold is calculated from a number of visible rows multiplied by
a number of pixels that a row requires to be readable for a given font
style and size.
17. A computer program product according to claim 16, wherein said given
font style and size are constant and said required number of pixels are
constant.
18. A computer program product according to claim 15, wherein said computer
program product further comprises:
third computer readable program code means for enabling a computer to
determine if the resized window is zoomed; and
fourth computer readable program code means for enabling a computer to draw
a zoomed view of the first display and the second display to the resized
window if said third computer readable program code means determines that
the resized window is zoomed.
19. A computer program product according to claim 15,
wherein said tabular format comprises a tabular representation of the first
data in a spreadsheet, wherein said spreadsheet comprising a plurality of
rows, and
wherein said graphical format comprises a graphical representation of one
or more data values in said spreadsheet.
20. A computer program product according to claim 19, wherein said first
drawing means comprises means for drawing the first display to a constant
width, and
wherein said first drawing means does not draw the first display when the
width of the resized window is less than said constant width.
21. A computer program product according to claim 19, wherein said second
computer readable program code means comprises means for enabling a
computer to proportionally adjusting said rows of said spreadsheet to fit
within said first height of said resized first display.
22. A computer program product for use with a windows environment, said
computer program product comprising:
a computer usable medium having computer readable program code method steps
embodied in said medium for resizing a window on a computer screen, the
window containing a first display for displaying first data in a tabular
format and a second display for displaying second data in a graphical
format, the resized window having a height and a width, the resized first
display having a first width and a first height and the resized second
display having a second width and a second height, the method steps
comprising the steps of:
(a) determining whether the resized first display has a first height that
is greater than a predetermined minimum height threshold representing a
height below which the data is unreadable when displayed in said tabular
format;
(b) drawing to said first scale the first display when said step (a)
determines that said first height is greater than said predetermined
minimum height threshold;
(c) resealing the first data in the tabular format to conform to the
resized first display when said step (b) is performed;
(d) drawing a resized second display within the resized window to a second
scale having a second height and a second width to fill the height and a
remaining width of the resized window after said steps (b) and (c) are
performed; and
(e) resealing the second data in the graphical format within the second
display to conform to said resized second display.
23. A computer program product according to claim 22, wherein said minimum
height threshold is calculated from a number of visible rows multiplied by
a number of pixels that a row requires to be readable for a given font
style and size.
24. A computer program product according to claim 22, wherein said first
width is a constant width, the method further comprising the step of:
(f) determining, prior to said step (b), whether said constant width is
less than or equal to the width of the resized window;
wherein said step (b) further includes the step of:
(1) drawing the first resized display to said constant width when said step
(d) determines that said constant width is less than or equal to said
resized window width.
25. A computer program product according to claim 22, wherein said tabular
format includes a plurality of rows of data, and wherein said step (b)
comprises the step of:
(1) proportionally adjusting a plurality of rows of the first display to
fit within the height of the resized window.
26. A program storage device readable by a machine, tangibly embodying a
program of instructions executable by the machine to perform the means for
resizing a window containing a first display for displaying a first data
in a tabular format and a second display for displaying a second data in a
graphical format, to a height and a width thereby creating a resized
window, said program storage device comprising:
first drawing means for drawing within the resized window a resized first
display to a first scale having a first height and a first width that fits
within the resized window with said first data in the tabular format
resealed to conform to said resized first display, said resized first
display drawn only when said first height is greater than a predetermined
minimum height threshold representing a height below which the first data
is considered to be unreadable in the tabular format; and
second drawing means for drawing a resized second display within the
resized window to a second scale having a second height and a second width
to fill the height and a remaining width of the resized window, wherein
the second data in the graphical format is resealed to conform to said
resized second display.
27. A program storage device according to claim 26, wherein said minimum
height threshold is calculated from a number of visible rows multiplied by
a number of pixels that a row requires to be readable for a given font
style and size.
28. A program storage device according to claim 27, wherein said given font
style and size are constant and said required number of pixels are
constant.
29. A program storage device according to claim 26,
wherein said tabular format comprises a tabular representation of the first
data in a spreadsheet, wherein said spreadsheet comprising a plurality of
rows, and
wherein said graphical format comprises a graphical representation of one
or more data values in said spreadsheet.
30. A program storage device according to claim 29, wherein said first
drawing means comprises means for drawing the first display to a constant
width, and
wherein said first drawing means does not draw the first display when the
width of the resized window is less than said constant width.
31. A program storage device according to claim 29, wherein said first
drawing means comprises:
means for proportionally adjusting said rows of said spreadsheet to fit
within said first height of said resized first display.
32. A computer system for resizing a window containing a first display for
displaying a first data in a first format and a second display for
displaying a second data in a second format, to a height and a width
thereby creating a resized window, comprising:
first drawing means for drawing within the resized window a resized first
display to a first scale having a first height and a first width that fits
within the resized window with said first data rescaled to conform to said
resized first display, said resized first display drawn only when at least
one of said first height and said first width is greater than a
predetermined minimum height and width threshold, respectively,
representing a dimension below which the first data is considered to be
unreadable in said first format, said minimum height threshold being
calculated from a number of visible rows multiplied by a number of pixels
that a row requires to be readable for a given font style and size; and
second drawing means for drawing a resized second display within the
resized window to a second scale having a second height and a second width
to fill a remaining height and width of the resized window, wherein the
second data is rescaled to conform to said resized second display.
33. A computer system according to claim 32,
wherein said first format comprises a tabular representation of the first
data in a spreadsheet, wherein said spreadsheet comprising a plurality of
rows, and
wherein said second format comprises a graphical representation of one or
more data values in said spreadsheet.
34. A method for resizing a window on a computer screen, the window
containing a first display for displaying first data in a first format and
a second display for displaying second data in a second format, the
resized window having a height and a width, the resized first display
having a first width and a first height and the resized second display
having a second width and a second height, the method comprising the steps
of:
(a) determining whether the resized first display has at least one of a
first height or first width that is greater than a predetermined minimum
height and width threshold, respectively, representing a dimension below
which the data is unreadable when displayed in said first format, said
minimum height threshold being is calculated from a number of visible rows
multiplied by a number of pixels that a row requires to be readable for a
given font style and size;
(b) drawing to said first scale the first display when said step (a)
determines that said at least one of a first height or width is greater
than said respective threshold;
(c) resealing the first data in the first format to conform to the resized
first display when said step (b) is performed;
(d) drawing a resized second display within the resized window to a second
scale having a second height and a second width to fill a remaining height
and width of the resized window after said steps (b) and (c) are
performed; and
(e) rescaling the second data in the second format within the second
display to conform to said resized second display. |
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Claims |
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Description |
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BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to computer window environments, and more
specifically to a computer system and method that controls the resizing
and repositioning of a window containing a tabular and graphical
representation of data.
2. Related Art
One way in which computer programs have become increasingly user friendly
is to employ a window type of user interface. Much of the power of the
windows environment is based on the fact that an application can create
multiple windows, each with a different function. A window manager
maintains a list of windows created by all executing applications. The
window manager associates windows with the applications in which they are
created. When an application terminates, the window manager destroys the
windows that the application created if the application itself has not
already destroyed them.
In the windows environment, window controls are the building blocks of a
windows application's user interface. Window controls include tools such
as: static text control, buttons, edit controls, scroll bars, and list
boxes. These controls become increasingly important to a user when working
in an environment where multiple windows are displayed on a computer
screen at one time. The user may constantly resize and reposition windows
to view as much information as possible. A problem arises, however, when a
window contains one or more displays that are not responsive to
conventional resizing techniques.
To better understand this invention, it is useful to describe some
additional terminology relating to windows. A window specifies an area of
a computer screen, normally rectangular in shape, that an application
dedicates to a specific function. The window provides a means for visually
interfacing with a user. The window's maximum extent covers the entire
rectangular area including the window's border if it has one. The client
area specifies the maximum area of the window into which an executing
application could draw. It includes the window's total area minus the
border region, scroll bars, and any control buttons and text.
In contemporary window environments, a user resizes a window by grabbing
the window's border and dragging it to a new position. The window manager
redraws the window to the new size at the new position. The redrawing of
the window, however, does not include the rescaling of the client area's
contents. The window manager keeps the contents of the client area,
including the size of the font, icons, and graphics, constant. If a user
reduces the size of a window to a point that the client area's contents
extend beyond the boundaries of the window's new client area, the window
manager displays a portion of the contents that fits within the window's
new client area along with scroll bars. The scroll bars allow the user to
move through the contents of the window's new client area.
This implementation has several disadvantages. First, the appearance of
scroll bars further reduces the viewable portion of the window's client
area. A user may reduce a window's size only to find that the window's
client area is reduced further due to the presence of scroll bars. Second,
scroll bars can be very cumbersome when a user wants to view the client
area of a window. A user may not be able to view a meaningful presentation
of data because only a limited portion of the data is visible. A user must
scroll between different positions of the client area to view the data.
An example of a window's client area that is greatly affected by the need
for scroll bars upon a reduction in the window's size is a client area
that displays data in multiple formats. For instance, a window may display
both a tabular representation of data in a spreadsheet and a graphical
representation of one or more of those data values. As noted above, upon
reducing a window's size, contemporary window environments maintain the
current window scale and format, and simply adds scroll bars. Therefore,
the user must scroll through the client area to view a particular portion
of the spreadsheet or graph that fits within the new size of the client
area. If the user reduces the window small enough, the user may lose all
benefit of the information because only a portion of the spreadsheet or
graph remains visible.
A user would greatly benefit if, upon the resizing of a window containing
data in multiple formats, the client area of the window maintained the
presentation of meaningful data. The user would have continued access to
meaningful data without the need for scrolling between various portions of
the client area. Therefore, there is a continuing need to have an
intelligent presentation of data which conforms the data to the resizing
of windows.
SUMMARY OF THE INVENTION
The present invention solves the current problem of resizing and
repositioning a window that contains a tabular representation of data in a
spreadsheet and a graph display of data values from the spreadsheet. Upon
the resizing and repositioning of the window, the present invention makes
best use of the resized window's client area by drawing a re-scaled
spreadsheet and graph display to the resized window, or drawing only the
spreadsheet or only the graph display to the resized window. Therefore,
the present invention ensures a continuous useful presentation of data
that conforms to the new window size.
One way in which the present invention ensures a useful presentation of
data is by retaining a constant width of the spreadsheet. A constant width
allows for the resized window to present the spreadsheet data in a
constant font style and size, thus ensuring that the data is always
readable. The present invention fills in the remaining width of the
resized window, the width remaining after drawing the constant width
spreadsheet, with a resized version of the graph display.
The height of the spreadsheet and graph display is drawn equal to the new
height of the resized window. Regarding the spreadsheet, the present
invention proportionally adjusts the height of each row of the spreadsheet
to fill the new height of the resized window's client area. However, if
the height of the resized window is reduced to a size in which the
spreadsheet data becomes unreadable, then the spreadsheet is not
displayed. The entire client area is filled with a resized graph display.
If the window is resized such that the spreadsheet would be readable, then
the spreadsheet reappears.
Additional features of this invention will become apparent from the
following detailed description of the best mode for carrying out the
invention and from appended claims.
BRIEF DESCRIPTION OF THE FIGURES
The present invention is described with reference to the accompanying
drawings. In the drawings, like reference numbers indicate identical or
functionally similar elements. Additionally, the left-most digit(s) of a
reference number identifies the drawing in which the reference number
first appears. In the drawings:
FIG. 1 is a block diagram illustrating the dependency of a windows
application;
FIG. 2 is a block diagram illustrating an exemplary computer system;
FIG. 3 is a block diagram illustrating the multiple components of the
present invention for resizing a vitals display window containing both a
spreadsheet and graph display of data;
FIG. 4 is a control flow diagram illustrating the operations of the Resize
Manager during the resizing of a vitals display window containing both a
spreadsheet and graph display of data;
FIG. 5 is a control flow diagram illustrating the operations of the Resize
Spreadsheet Manager during the resizing of a vitals display window
containing both a spreadsheet and graph display of data;
FIG. 6 is a control flow diagram illustrating the operations of the Resize
Graph Manager during the resizing of a vitals display window containing
both a spreadsheet and graph display of data;
FIG. 7 is a control flow diagram illustrating the resizing of the
spreadsheet within a vitals display window; and
FIGS. 8(A)-(G) collectively illustrate a series of screens displaying
various representations of a vitals display window that contains a
spreadsheet and graph display of data. More specifically:
FIG. 8(A) is an illustration of a screen displaying a zoomed vitals display
window containing both a spreadsheet and graphical representation of data;
FIG. 8(B) is an illustration of a screen displaying a combination of
windows: window-A, and a vitals display window containing both a
spreadsheet and graph display of data;
FIG. 8(C) is an illustration of a screen displaying a combination of
windows: window-A, and a shorter vitals display window containing a
shortened graph display of data;
FIG. 8(D) is an illustration of a screen displaying a combination of
windows: a large window-A, and a very small vitals display window
containing a very small graph display of data;
FIG. 8(E) is an illustration of a screen displaying a combination of
windows: window-A, window-B, and a narrow vitals display window containing
a spreadsheet and a narrow graph display of data;
FIG. 8(F) is an illustration of a screen displaying a combination of
windows: window-A, window-B, and a very narrow vitals display window
containing only a spreadsheet; and
FIG. 8(G) is an illustration of a screen displaying a combination of
windows: window-A, window-B, and a very narrow and tall vitals display
window containing only a spreadsheet.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention solves the current problem of providing an
intelligent presentation of data which conforms the data to the resizing
of windows. More specifically, the present invention makes the best use of
a resized window's client area, where the window contains a tabular
representation of data in a spreadsheet and a graph display of data values
from the spreadsheet, thereby ensuring a continuous useful presentation of
data that conforms to the new window size.
This invention provides a custom windows function for a windows
application. FIG. 1 illustrates the implementation and dependency of a
windows application. For example, a user develops a windows application
108 in a high level language such as C++, Fortran, Basic, Pascal, Ada, or
SmallTalk. A windows application 108 is one which uses window displays to
interface with a user. Various software vendors, such as Microsoft, have
provided window libraries for the high level programming languages. These
window libraries provide high level languages with a set of subroutines
having a standardized interface for creating, managing, manipulating, and
terminating windows on a screen. The subroutines are called core window
functions 104. Window applications 108 call the core window functions 104
to access window capabilities, thereby eliminating the need to continually
redevelop window software. The core window functions 104 also provide
window applications 108 with the capability of developing custom window
functions 106. Custom window functions 106 allow a windows application 108
to develop its own implementation for a specific windows function while
maintaining the standard windows function interface. Therefore, for its
window displays, a windows application 108 can use custom window functions
106 for executing specific window capabilities as well as core window
functions 104 for general window capabilities.
The chosen embodiment of the present invention is a customized window
function for resizing a window containing both a spreadsheet and a graph
display. Accordingly, the chosen embodiment is computer software executing
within a computer system. An exemplary computer system 202 is shown in
FIG. 2. The computer system 202 includes one or more processors, such as a
processor 204. The processor 204 is connected to a communication bus 206.
The computer system 202 also includes a main memory 208, preferably random
access memory (RAM), and a secondary memory 210. The secondary memory 210
includes, for example, a hard disk drive 212 and/or a removable storage
drive 214, representing a floppy disk drive, a magnetic tape drive, a
compact disk drive, etc. The removable storage drive 214 reads from and/or
writes to a removable storage unit 216 in a well known manner.
Removable storage unit 216, also called a program storage device or a
computer program product, represents a floppy disk, magnetic tape, compact
disk, etc. As will be appreciated, the removable storage unit 216 includes
a computer usable storage medium having stored therein computer software
and/or data.
Computer programs (also called computer control logic) are stored in main
memory 208 and/or the secondary memory 210. Such computer programs, when
executed, enable the computer system 202 to perform the functions of the
present invention as discussed herein. In particular, the computer
programs, when executed, enable the processor 204 to perform the functions
of the present invention. Accordingly, such computer programs represent
controllers of the computer system 202.
In another embodiment, the invention is directed to a computer program
product comprising a computer readable medium having control logic
(computer software) stored therein. The control logic, when executed by
the processor 204, causes the processor 204 to perform the functions of
the invention as described herein.
In another embodiment, the invention is implemented primarily in hardware
using, for example, a hardware state machine. Implementation of the
hardware state machine so as to perform the functions described herein
will be apparent to persons skilled in the relevant arts.
The present invention is described in terms of a computer program executing
within a computer system 202. More specifically, the invention is
described in terms of a customized Microsoft OnSizeo command in the high
level programming language C++, and can be executed on an International
Business Machine Corporation (IBM) compatible personal computer (PC) with
at least an Intel 80486 microprocessor, 4 megabytes of random access
memory (RAM), and executing Microsoft Windows. For more information on the
Microsoft OnSize command, see Reference Volume I, Class Library Reference
for the Microsoft Foundation Class Library, Microsoft Visual C++,
Professional Edition, Development System for Windows, Version 1.5, which
is incorporated herein by reference in its entirety. For more information
on the programming language C++, see Craig Arnush, Teach Yourself Turbo
C++ for Windows in 21 Days, SAMS Publishing, First Edition 1995, which is
incorporated herein by reference in its entirety. Description in these
terms is provided for convenience only. It is not intended that the
invention be limited to application in this example environment. In fact,
after reading the following description, it will become apparent to a
person skilled in the relevant art how to implement the invention in
alternative environments.
The chosen embodiment also implements a window containing both a tabular
representation of data in a spreadsheet and a graph display of data values
in the spreadsheet. The chosen embodiment uses Spread/VBX++, available by
FarPoint Technologies, Incorporated, for creating and managing the
spreadsheet. The chosen embodiment also uses ChartBuilder, available by
Pinnacle Publishing, Incorporated, for creating and managing the graph
display. These chosen embodiments are also for convenience purposes only.
It is not intended that the invention be limited to application in this
example environment. In fact, after reading the following description, it
will become apparent to a person skilled in the relevant art how to
implement the invention in alternative window environments displaying
different data formats and representations.
To better understand the chosen embodiment of the present invention, it is
useful to describe the display environment of the windows application in
which the present invention operates. First, the windows application
overlays the display screen with one window called the main application
window. The main application window has a control panel, status bar, and a
client area. The windows application draws different windows to the client
area of the main application window. In the chosen embodiment, the title
of the window that contains both the spreadsheet and the graph display of
the data is the vitals display window. The vitals display window is one
window that the windows application draws to the client area of the main
application window. The vitals display window comprises a border, a client
area into which the spreadsheet and graph display is drawn, and a control
panel including a window title and control buttons. The present invention
is invoked when a user of the windows application resizes the vitals
display window. This chosen embodiment is for convenience purposes only.
It is not intended that the invention be limited to such a windows
application. It will become apparent to a person skilled in the relevant
art how to implement and use this invention in any windows environment.
FIG. 3 is a block diagram illustrating the chosen embodiment of the present
invention. The present invention is decomposed into three components:
Resize Manager 302, Resize Spreadsheet Manager 304, and Resize Graph
Manager 306. FIG. 4 illustrates the control flow of the Resize Manager
302; FIG. 5 illustrates the control flow of the Resize Spreadsheet Manager
304; and FIG. 6 illustrates the control flow of the Resize Graph Manager
306.
When a user resizes a vitals display window, the windows application
invokes the Resize Manager 302 at step 402 in FIG. 4. In step 402, the
Resize Manager 302 determines if the state of the vitals display window is
zoomed. The vitals display window is zoomed if its controls are merged
with the main application window's controls, thereby allowing the vitals
display window's client area to be equal to the main application window's
client area. If the vitals display window is zoomed, the Resize Manager
302 proceeds to step 404. In step 404, the Resize Manager 302 restores the
spreadsheet and graph display of the vitals display window to the App
Studio view which is a well known type of display in the relevant art. The
App Studio is a view created by using the App Studio tool of the visual C
++ developer's kit. The tool allows one to design a view with fixed
positions for such things as buttons, edit boxes, and, in this case,
spreadsheets, graphs, and static text. From step 404, the Resize Manager
302 proceeds to step 406 and exits, thereby retuning control to the
windows application.
The following computer program code represents the best mode for the above
detailed description of the Resize Manager 302:
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//create custom implementation for OnSize which
//resizes a vitals window display containing a
//spreadsheet and a graph
void CStatsView::OnSize(UINT nType, int cx, int cy)
//declare local variables
int nSpreadWidth;
RECT CRect;
CWnd* pWnd;
//call base class method to perform standard processing
CBarFormView::OnSize(nType, cx, cy);
static int i = 0;
//parse the resizing command for the vitals display
//window
switch (nType){
case SIZE.sub.-- MAXIMIZED;
break;
case SIZE.sub.-- MINIMIZED;
break;
case SIZE.sub.-- RESTORED;
//if vitals display window is zoomed (client area
//is maximized) then display App Studio view
if ( ((CBarFrameWnd *)GetparentFrame()) ->
IsZoomed()) {
//Restore to App studio definition for entire screen
m.sub.-- SS -> Move(m.sub.-- pSSDefPos);
ResizeSpreadSheet(M.sub.-- pSSDefPos, m.sub.-- SS);
m.sub.-- pGraph -> Move(m.sub.-- GraphDefPos);
//Show static controls which include : static text
//box and 3-D shadowing effect of the spreadsheet
//and graph display
pWnd = GetDlgItem(IDC.sub.-- VITALS.sub.-- STATIC1);
if (pWnd)
pWnd -> ShowWindow(SW.sub.-- SHOW);
pWnd = GetDlgItem(IDC.sub.-- VITALS.sub.-- STATIC2);
if (pWnd)
pWnd -> ShowWindow(SW.sub.-- SHOW);
pWnd = GetDlgItem(IDC.sub.-- VITALS.sub.-- STATIC3);
if (pWnd)
pWnd -> ShowWindow(SW.sub.-- SHOW);
//exit custom OnSize command
return
}
//the following lines of source code are placed here.
}
______________________________________
Returning to step 402, if the vitals display window is not zoomed, the
Resize Manager 302 proceeds to step 408. In step 408, the Resize Manager
302 retrieves the new size of the client area of the vitals display window
into which it will draw the spreadsheet and graph display. From step 408,
the Resize Manager 302 proceeds to step 410. In step 410, the Resize
Manager 302 initializes the variable corresponding to the width of the
spreadsheet display drawn to the vitals display window to zero (0). Next,
the Resize Manager 302 invokes the Resize Spreadsheet Manager 304 by
proceeding to step 502 on FIG. 5.
In step 502, the Resize Spreadsheet Manager 304 determines if the
spreadsheet is initialized. The windows application initializes the
spreadsheet during initialization of the application views. This step is a
safety check on the windows application's initialization.
In step 502, if the spreadsheet is initialized, then the Resize Spreadsheet
Manager 304 proceeds to step 504. In step 504, the Resize Spreadsheet
Manager 304 compares the new height of the client area of the vitals
display window to a minimum spreadsheet height. This test ensures that the
spreadsheet is only drawn to the vitals display window if the client area
of the vitals display window is greater than some minimum height
threshold. The minimum height threshold represents a height below which
the data in the spreadsheet would become unreadable. The minimum height
threshold is calculated from the number of visible rows multiplied by the
number of pixels that a row requires to be readable for a given font style
and size. The chosen embodiment uses a fixed font style and size, and
therefore, uses a constant in its calculation for the number of required
pixels. It would be apparent to one skilled in the art to substitute for
the constant a dynamic calculation of the minimum number of pixels
required for different font styles and siz | | |
